Home / 3,612.74-5,419.87-1,272.65

Finding the Fourth Proportional to 3,612.74, 5,419.87 and 1,272.65

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Solution

The fourth proportional to 3,612.74, 5,419.87 and 1,272.65 is: 1,909.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.74 : 5,419.87 = 1,272.65 : x
  2. Step 2: Convert to fraction form
    3,612.74/5,419.87 = 1,272.65/x
  3. Step 3: Cross multiply
    3,612.74x = 5,419.87 × 1,272.65
  4. Step 4: Simplify right side
    3,612.74x = 6,897,567.27
  5. Step 5: Solve for x
    x = 6,897,567.27/3,612.74
  6. Step 6: Final answer
    x = 1,909.24

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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.