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Finding the Fourth Proportional to 8,959.65, 13,439.72 and 2,385.86

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Solution

The fourth proportional to 8,959.65, 13,439.72 and 2,385.86 is: 3,578.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.65 : 13,439.72 = 2,385.86 : x
  2. Step 2: Convert to fraction form
    8,959.65/13,439.72 = 2,385.86/x
  3. Step 3: Cross multiply
    8,959.65x = 13,439.72 × 2,385.86
  4. Step 4: Simplify right side
    8,959.65x = 32,065,229.13
  5. Step 5: Solve for x
    x = 32,065,229.13/8,959.65
  6. Step 6: Final answer
    x = 3,578.85

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1.5x scale

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.