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Finding the Fourth Proportional to 8,700.38, 13,049.22 and 2,856.95

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Solution

The fourth proportional to 8,700.38, 13,049.22 and 2,856.95 is: 4,284.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.38 : 13,049.22 = 2,856.95 : x
  2. Step 2: Convert to fraction form
    8,700.38/13,049.22 = 2,856.95/x
  3. Step 3: Cross multiply
    8,700.38x = 13,049.22 × 2,856.95
  4. Step 4: Simplify right side
    8,700.38x = 37,280,969.08
  5. Step 5: Solve for x
    x = 37,280,969.08/8,700.38
  6. Step 6: Final answer
    x = 4,284.98

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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.