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Finding the Fourth Proportional to 8,914.24, 12,306.08 and 6,920.32

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Solution

The fourth proportional to 8,914.24, 12,306.08 and 6,920.32 is: 9,553.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,914.24 : 12,306.08 = 6,920.32 : x
  2. Step 2: Convert to fraction form
    8,914.24/12,306.08 = 6,920.32/x
  3. Step 3: Cross multiply
    8,914.24x = 12,306.08 × 6,920.32
  4. Step 4: Simplify right side
    8,914.24x = 85,162,011.55
  5. Step 5: Solve for x
    x = 85,162,011.55/8,914.24
  6. Step 6: Final answer
    x = 9,553.48

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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.