Home / 8,294.32-12,435.38-3,909.40

Finding the Fourth Proportional to 8,294.32, 12,435.38 and 3,909.40

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Solution

The fourth proportional to 8,294.32, 12,435.38 and 3,909.40 is: 5,861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,294.32 : 12,435.38 = 3,909.40 : x
  2. Step 2: Convert to fraction form
    8,294.32/12,435.38 = 3,909.40/x
  3. Step 3: Cross multiply
    8,294.32x = 12,435.38 × 3,909.40
  4. Step 4: Simplify right side
    8,294.32x = 48,614,874.57
  5. Step 5: Solve for x
    x = 48,614,874.57/8,294.32
  6. Step 6: Final answer
    x = 5,861.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.