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Finding the Fourth Proportional to 8,909.92, 12,294.21 and 5,723.92

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Solution

The fourth proportional to 8,909.92, 12,294.21 and 5,723.92 is: 7,898.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.92 : 12,294.21 = 5,723.92 : x
  2. Step 2: Convert to fraction form
    8,909.92/12,294.21 = 5,723.92/x
  3. Step 3: Cross multiply
    8,909.92x = 12,294.21 × 5,723.92
  4. Step 4: Simplify right side
    8,909.92x = 70,371,074.50
  5. Step 5: Solve for x
    x = 70,371,074.50/8,909.92
  6. Step 6: Final answer
    x = 7,898.06

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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.