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Finding the Fourth Proportional to 9,332.39, 12,879.42 and 5,354.78

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Solution

The fourth proportional to 9,332.39, 12,879.42 and 5,354.78 is: 7,390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,332.39 : 12,879.42 = 5,354.78 : x
  2. Step 2: Convert to fraction form
    9,332.39/12,879.42 = 5,354.78/x
  3. Step 3: Cross multiply
    9,332.39x = 12,879.42 × 5,354.78
  4. Step 4: Simplify right side
    9,332.39x = 68,966,396.23
  5. Step 5: Solve for x
    x = 68,966,396.23/9,332.39
  6. Step 6: Final answer
    x = 7,390.01

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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.