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Finding the Fourth Proportional to 9,332.64, 12,879.68 and 5,354.88

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Solution

The fourth proportional to 9,332.64, 12,879.68 and 5,354.88 is: 7,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,332.64 : 12,879.68 = 5,354.88 : x
  2. Step 2: Convert to fraction form
    9,332.64/12,879.68 = 5,354.88/x
  3. Step 3: Cross multiply
    9,332.64x = 12,879.68 × 5,354.88
  4. Step 4: Simplify right side
    9,332.64x = 68,969,140.84
  5. Step 5: Solve for x
    x = 68,969,140.84/9,332.64
  6. Step 6: Final answer
    x = 7,390.10

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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.