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Finding the Fourth Proportional to 7,423.40, 11,091.46 and 7,164.98

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Solution

The fourth proportional to 7,423.40, 11,091.46 and 7,164.98 is: 10,705.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,423.40 : 11,091.46 = 7,164.98 : x
  2. Step 2: Convert to fraction form
    7,423.40/11,091.46 = 7,164.98/x
  3. Step 3: Cross multiply
    7,423.40x = 11,091.46 × 7,164.98
  4. Step 4: Simplify right side
    7,423.40x = 79,470,089.07
  5. Step 5: Solve for x
    x = 79,470,089.07/7,423.40
  6. Step 6: Final answer
    x = 10,705.35

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Find fourth proportional to 3,711.70, 5,545.73 and 3,582.49
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.