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Finding the Fourth Proportional to 8,591.90, 12,887.87 and 2,748.96

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Solution

The fourth proportional to 8,591.90, 12,887.87 and 2,748.96 is: 4,123.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.90 : 12,887.87 = 2,748.96 : x
  2. Step 2: Convert to fraction form
    8,591.90/12,887.87 = 2,748.96/x
  3. Step 3: Cross multiply
    8,591.90x = 12,887.87 × 2,748.96
  4. Step 4: Simplify right side
    8,591.90x = 35,428,225.37
  5. Step 5: Solve for x
    x = 35,428,225.37/8,591.90
  6. Step 6: Final answer
    x = 4,123.45

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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.