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Finding the Fourth Proportional to 8,643.25, 12,964.88 and 2,487.25

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Solution

The fourth proportional to 8,643.25, 12,964.88 and 2,487.25 is: 3,730.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.25 : 12,964.88 = 2,487.25 : x
  2. Step 2: Convert to fraction form
    8,643.25/12,964.88 = 2,487.25/x
  3. Step 3: Cross multiply
    8,643.25x = 12,964.88 × 2,487.25
  4. Step 4: Simplify right side
    8,643.25x = 32,246,897.78
  5. Step 5: Solve for x
    x = 32,246,897.78/8,643.25
  6. Step 6: Final answer
    x = 3,730.88

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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.