Home / 9,074.78-12,517.18-5,487.40

Finding the Fourth Proportional to 9,074.78, 12,517.18 and 5,487.40

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Solution

The fourth proportional to 9,074.78, 12,517.18 and 5,487.40 is: 7,568.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,074.78 : 12,517.18 = 5,487.40 : x
  2. Step 2: Convert to fraction form
    9,074.78/12,517.18 = 5,487.40/x
  3. Step 3: Cross multiply
    9,074.78x = 12,517.18 × 5,487.40
  4. Step 4: Simplify right side
    9,074.78x = 68,686,773.53
  5. Step 5: Solve for x
    x = 68,686,773.53/9,074.78
  6. Step 6: Final answer
    x = 7,568.97

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.