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Finding the Fourth Proportional to 7,242.52, 9,991.70 and 4,407.62

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Solution

The fourth proportional to 7,242.52, 9,991.70 and 4,407.62 is: 6,080.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.52 : 9,991.70 = 4,407.62 : x
  2. Step 2: Convert to fraction form
    7,242.52/9,991.70 = 4,407.62/x
  3. Step 3: Cross multiply
    7,242.52x = 9,991.70 × 4,407.62
  4. Step 4: Simplify right side
    7,242.52x = 44,039,616.75
  5. Step 5: Solve for x
    x = 44,039,616.75/7,242.52
  6. Step 6: Final answer
    x = 6,080.70

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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.