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Finding the Fourth Proportional to 5,878.79, 8,818.20 and 2,591.90

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Solution

The fourth proportional to 5,878.79, 8,818.20 and 2,591.90 is: 3,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,878.79 : 8,818.20 = 2,591.90 : x
  2. Step 2: Convert to fraction form
    5,878.79/8,818.20 = 2,591.90/x
  3. Step 3: Cross multiply
    5,878.79x = 8,818.20 × 2,591.90
  4. Step 4: Simplify right side
    5,878.79x = 22,855,892.58
  5. Step 5: Solve for x
    x = 22,855,892.58/5,878.79
  6. Step 6: Final answer
    x = 3,887.86

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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.