Home / 7,531.62-10,382.12-5,287.20

Finding the Fourth Proportional to 7,531.62, 10,382.12 and 5,287.20

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Solution

The fourth proportional to 7,531.62, 10,382.12 and 5,287.20 is: 7,288.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,531.62 : 10,382.12 = 5,287.20 : x
  2. Step 2: Convert to fraction form
    7,531.62/10,382.12 = 5,287.20/x
  3. Step 3: Cross multiply
    7,531.62x = 10,382.12 × 5,287.20
  4. Step 4: Simplify right side
    7,531.62x = 54,892,318.43
  5. Step 5: Solve for x
    x = 54,892,318.43/7,531.62
  6. Step 6: Final answer
    x = 7,288.25

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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.