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Finding the Fourth Proportional to 8,641.88, 12,964.07 and 3,711.48

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Solution

The fourth proportional to 8,641.88, 12,964.07 and 3,711.48 is: 5,567.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.88 : 12,964.07 = 3,711.48 : x
  2. Step 2: Convert to fraction form
    8,641.88/12,964.07 = 3,711.48/x
  3. Step 3: Cross multiply
    8,641.88x = 12,964.07 × 3,711.48
  4. Step 4: Simplify right side
    8,641.88x = 48,115,886.52
  5. Step 5: Solve for x
    x = 48,115,886.52/8,641.88
  6. Step 6: Final answer
    x = 5,567.76

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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.