Home / 5,079.20-7,618.92-1,616.72

Finding the Fourth Proportional to 5,079.20, 7,618.92 and 1,616.72

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Solution

The fourth proportional to 5,079.20, 7,618.92 and 1,616.72 is: 2,425.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.20 : 7,618.92 = 1,616.72 : x
  2. Step 2: Convert to fraction form
    5,079.20/7,618.92 = 1,616.72/x
  3. Step 3: Cross multiply
    5,079.20x = 7,618.92 × 1,616.72
  4. Step 4: Simplify right side
    5,079.20x = 12,317,660.34
  5. Step 5: Solve for x
    x = 12,317,660.34/5,079.20
  6. Step 6: Final answer
    x = 2,425.12

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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.