Home / 5,377.68-8,065.92-1,680.04

Finding the Fourth Proportional to 5,377.68, 8,065.92 and 1,680.04

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Solution

The fourth proportional to 5,377.68, 8,065.92 and 1,680.04 is: 2,519.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.68 : 8,065.92 = 1,680.04 : x
  2. Step 2: Convert to fraction form
    5,377.68/8,065.92 = 1,680.04/x
  3. Step 3: Cross multiply
    5,377.68x = 8,065.92 × 1,680.04
  4. Step 4: Simplify right side
    5,377.68x = 13,551,068.24
  5. Step 5: Solve for x
    x = 13,551,068.24/5,377.68
  6. Step 6: Final answer
    x = 2,519.87

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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.