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Finding the Fourth Proportional to 7,389.70, 11,084.55 and 3,501.70

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Solution

The fourth proportional to 7,389.70, 11,084.55 and 3,501.70 is: 5,252.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,389.70 : 11,084.55 = 3,501.70 : x
  2. Step 2: Convert to fraction form
    7,389.70/11,084.55 = 3,501.70/x
  3. Step 3: Cross multiply
    7,389.70x = 11,084.55 × 3,501.70
  4. Step 4: Simplify right side
    7,389.70x = 38,814,768.74
  5. Step 5: Solve for x
    x = 38,814,768.74/7,389.70
  6. Step 6: Final answer
    x = 5,252.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.