Home / 3,613.14-5,419.86-1,147.90

Finding the Fourth Proportional to 3,613.14, 5,419.86 and 1,147.90

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Solution

The fourth proportional to 3,613.14, 5,419.86 and 1,147.90 is: 1,721.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.14 : 5,419.86 = 1,147.90 : x
  2. Step 2: Convert to fraction form
    3,613.14/5,419.86 = 1,147.90/x
  3. Step 3: Cross multiply
    3,613.14x = 5,419.86 × 1,147.90
  4. Step 4: Simplify right side
    3,613.14x = 6,221,457.29
  5. Step 5: Solve for x
    x = 6,221,457.29/3,613.14
  6. Step 6: Final answer
    x = 1,721.90

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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.