Home / 5,379.08-7,419.02-3,891.92

Finding the Fourth Proportional to 5,379.08, 7,419.02 and 3,891.92

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Solution

The fourth proportional to 5,379.08, 7,419.02 and 3,891.92 is: 5,367.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.08 : 7,419.02 = 3,891.92 : x
  2. Step 2: Convert to fraction form
    5,379.08/7,419.02 = 3,891.92/x
  3. Step 3: Cross multiply
    5,379.08x = 7,419.02 × 3,891.92
  4. Step 4: Simplify right side
    5,379.08x = 28,874,175.76
  5. Step 5: Solve for x
    x = 28,874,175.76/5,379.08
  6. Step 6: Final answer
    x = 5,367.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.