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Finding the Fourth Proportional to 9,327, 12,871.26 and 5,135.52

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Solution

The fourth proportional to 9,327, 12,871.26 and 5,135.52 is: 7,087.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327 : 12,871.26 = 5,135.52 : x
  2. Step 2: Convert to fraction form
    9,327/12,871.26 = 5,135.52/x
  3. Step 3: Cross multiply
    9,327x = 12,871.26 × 5,135.52
  4. Step 4: Simplify right side
    9,327x = 66,100,613.16
  5. Step 5: Solve for x
    x = 66,100,613.16/9,327
  6. Step 6: Final answer
    x = 7,087.02

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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.