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Finding the Fourth Proportional to 8,630.29, 12,945.44 and 4,759.30

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Solution

The fourth proportional to 8,630.29, 12,945.44 and 4,759.30 is: 7,138.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.29 : 12,945.44 = 4,759.30 : x
  2. Step 2: Convert to fraction form
    8,630.29/12,945.44 = 4,759.30/x
  3. Step 3: Cross multiply
    8,630.29x = 12,945.44 × 4,759.30
  4. Step 4: Simplify right side
    8,630.29x = 61,611,176.43
  5. Step 5: Solve for x
    x = 61,611,176.43/8,630.29
  6. Step 6: Final answer
    x = 7,138.95

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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.