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Finding the Fourth Proportional to 8,165.90, 12,248.86 and 2,619.30

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Solution

The fourth proportional to 8,165.90, 12,248.86 and 2,619.30 is: 3,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165.90 : 12,248.86 = 2,619.30 : x
  2. Step 2: Convert to fraction form
    8,165.90/12,248.86 = 2,619.30/x
  3. Step 3: Cross multiply
    8,165.90x = 12,248.86 × 2,619.30
  4. Step 4: Simplify right side
    8,165.90x = 32,083,439.00
  5. Step 5: Solve for x
    x = 32,083,439.00/8,165.90
  6. Step 6: Final answer
    x = 3,928.95

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Similar ratio
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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.