Home / 3,613.31-5,419.35-1,422.66

Finding the Fourth Proportional to 3,613.31, 5,419.35 and 1,422.66

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Solution

The fourth proportional to 3,613.31, 5,419.35 and 1,422.66 is: 2,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.31 : 5,419.35 = 1,422.66 : x
  2. Step 2: Convert to fraction form
    3,613.31/5,419.35 = 1,422.66/x
  3. Step 3: Cross multiply
    3,613.31x = 5,419.35 × 1,422.66
  4. Step 4: Simplify right side
    3,613.31x = 7,709,892.47
  5. Step 5: Solve for x
    x = 7,709,892.47/3,613.31
  6. Step 6: Final answer
    x = 2,133.75

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1.5x scale

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.