Home / 5,419.25-8,115.10-4,920.02

Finding the Fourth Proportional to 5,419.25, 8,115.10 and 4,920.02

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Solution

The fourth proportional to 5,419.25, 8,115.10 and 4,920.02 is: 7,367.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.25 : 8,115.10 = 4,920.02 : x
  2. Step 2: Convert to fraction form
    5,419.25/8,115.10 = 4,920.02/x
  3. Step 3: Cross multiply
    5,419.25x = 8,115.10 × 4,920.02
  4. Step 4: Simplify right side
    5,419.25x = 39,926,454.30
  5. Step 5: Solve for x
    x = 39,926,454.30/5,419.25
  6. Step 6: Final answer
    x = 7,367.52

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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.