Home / 5,421.76-8,135.88-2,343.76

Finding the Fourth Proportional to 5,421.76, 8,135.88 and 2,343.76

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Solution

The fourth proportional to 5,421.76, 8,135.88 and 2,343.76 is: 3,517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.76 : 8,135.88 = 2,343.76 : x
  2. Step 2: Convert to fraction form
    5,421.76/8,135.88 = 2,343.76/x
  3. Step 3: Cross multiply
    5,421.76x = 8,135.88 × 2,343.76
  4. Step 4: Simplify right side
    5,421.76x = 19,068,550.11
  5. Step 5: Solve for x
    x = 19,068,550.11/5,421.76
  6. Step 6: Final answer
    x = 3,517.04

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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.