Home / 3,613.80-5,420.61-1,148.79

Finding the Fourth Proportional to 3,613.80, 5,420.61 and 1,148.79

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Solution

The fourth proportional to 3,613.80, 5,420.61 and 1,148.79 is: 1,723.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.80 : 5,420.61 = 1,148.79 : x
  2. Step 2: Convert to fraction form
    3,613.80/5,420.61 = 1,148.79/x
  3. Step 3: Cross multiply
    3,613.80x = 5,420.61 × 1,148.79
  4. Step 4: Simplify right side
    3,613.80x = 6,227,142.56
  5. Step 5: Solve for x
    x = 6,227,142.56/3,613.80
  6. Step 6: Final answer
    x = 1,723.16

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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.