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Finding the Fourth Proportional to 8,643.50, 12,965.98 and 2,487.50

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Solution

The fourth proportional to 8,643.50, 12,965.98 and 2,487.50 is: 3,731.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.50 : 12,965.98 = 2,487.50 : x
  2. Step 2: Convert to fraction form
    8,643.50/12,965.98 = 2,487.50/x
  3. Step 3: Cross multiply
    8,643.50x = 12,965.98 × 2,487.50
  4. Step 4: Simplify right side
    8,643.50x = 32,252,875.25
  5. Step 5: Solve for x
    x = 32,252,875.25/8,643.50
  6. Step 6: Final answer
    x = 3,731.46

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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.