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Finding the Fourth Proportional to 7,175.29, 9,908.43 and 5,403.82

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Solution

The fourth proportional to 7,175.29, 9,908.43 and 5,403.82 is: 7,462.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.29 : 9,908.43 = 5,403.82 : x
  2. Step 2: Convert to fraction form
    7,175.29/9,908.43 = 5,403.82/x
  3. Step 3: Cross multiply
    7,175.29x = 9,908.43 × 5,403.82
  4. Step 4: Simplify right side
    7,175.29x = 53,543,372.20
  5. Step 5: Solve for x
    x = 53,543,372.20/7,175.29
  6. Step 6: Final answer
    x = 7,462.19

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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.