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Finding the Fourth Proportional to 7,318.96, 10,100.10 and 4,175.20

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Solution

The fourth proportional to 7,318.96, 10,100.10 and 4,175.20 is: 5,761.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.96 : 10,100.10 = 4,175.20 : x
  2. Step 2: Convert to fraction form
    7,318.96/10,100.10 = 4,175.20/x
  3. Step 3: Cross multiply
    7,318.96x = 10,100.10 × 4,175.20
  4. Step 4: Simplify right side
    7,318.96x = 42,169,937.52
  5. Step 5: Solve for x
    x = 42,169,937.52/7,318.96
  6. Step 6: Final answer
    x = 5,761.74

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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.