Home / 5,677.28-8,516.16-1,979.88

Finding the Fourth Proportional to 5,677.28, 8,516.16 and 1,979.88

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Solution

The fourth proportional to 5,677.28, 8,516.16 and 1,979.88 is: 2,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,677.28 : 8,516.16 = 1,979.88 : x
  2. Step 2: Convert to fraction form
    5,677.28/8,516.16 = 1,979.88/x
  3. Step 3: Cross multiply
    5,677.28x = 8,516.16 × 1,979.88
  4. Step 4: Simplify right side
    5,677.28x = 16,860,974.86
  5. Step 5: Solve for x
    x = 16,860,974.86/5,677.28
  6. Step 6: Final answer
    x = 2,969.90

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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.