Home / 9,123.70-13,685.55-3,280.90

Finding the Fourth Proportional to 9,123.70, 13,685.55 and 3,280.90

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Solution

The fourth proportional to 9,123.70, 13,685.55 and 3,280.90 is: 4,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,123.70 : 13,685.55 = 3,280.90 : x
  2. Step 2: Convert to fraction form
    9,123.70/13,685.55 = 3,280.90/x
  3. Step 3: Cross multiply
    9,123.70x = 13,685.55 × 3,280.90
  4. Step 4: Simplify right side
    9,123.70x = 44,900,921.00
  5. Step 5: Solve for x
    x = 44,900,921.00/9,123.70
  6. Step 6: Final answer
    x = 4,921.35

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.