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Finding the Fourth Proportional to 9,199.52, 12,695.14 and 5,166.44

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Solution

The fourth proportional to 9,199.52, 12,695.14 and 5,166.44 is: 7,129.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,199.52 : 12,695.14 = 5,166.44 : x
  2. Step 2: Convert to fraction form
    9,199.52/12,695.14 = 5,166.44/x
  3. Step 3: Cross multiply
    9,199.52x = 12,695.14 × 5,166.44
  4. Step 4: Simplify right side
    9,199.52x = 65,588,679.10
  5. Step 5: Solve for x
    x = 65,588,679.10/9,199.52
  6. Step 6: Final answer
    x = 7,129.58

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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.