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Finding the Fourth Proportional to 7,232.20, 9,979.20 and 4,088.32

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Solution

The fourth proportional to 7,232.20, 9,979.20 and 4,088.32 is: 5,641.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,232.20 : 9,979.20 = 4,088.32 : x
  2. Step 2: Convert to fraction form
    7,232.20/9,979.20 = 4,088.32/x
  3. Step 3: Cross multiply
    7,232.20x = 9,979.20 × 4,088.32
  4. Step 4: Simplify right side
    7,232.20x = 40,798,162.94
  5. Step 5: Solve for x
    x = 40,798,162.94/7,232.20
  6. Step 6: Final answer
    x = 5,641.18

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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.