Home / 5,419.98-7,479.68-3,181.95

Finding the Fourth Proportional to 5,419.98, 7,479.68 and 3,181.95

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Solution

The fourth proportional to 5,419.98, 7,479.68 and 3,181.95 is: 4,391.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.98 : 7,479.68 = 3,181.95 : x
  2. Step 2: Convert to fraction form
    5,419.98/7,479.68 = 3,181.95/x
  3. Step 3: Cross multiply
    5,419.98x = 7,479.68 × 3,181.95
  4. Step 4: Simplify right side
    5,419.98x = 23,799,951.87
  5. Step 5: Solve for x
    x = 23,799,951.87/5,419.98
  6. Step 6: Final answer
    x = 4,391.15

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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.