Home / 8,487.28-12,732.60-2,643.64

Finding the Fourth Proportional to 8,487.28, 12,732.60 and 2,643.64

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Solution

The fourth proportional to 8,487.28, 12,732.60 and 2,643.64 is: 3,965.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.28 : 12,732.60 = 2,643.64 : x
  2. Step 2: Convert to fraction form
    8,487.28/12,732.60 = 2,643.64/x
  3. Step 3: Cross multiply
    8,487.28x = 12,732.60 × 2,643.64
  4. Step 4: Simplify right side
    8,487.28x = 33,660,410.66
  5. Step 5: Solve for x
    x = 33,660,410.66/8,487.28
  6. Step 6: Final answer
    x = 3,965.98

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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.