Home / 3,613.98-5,420.97-1,422.12

Finding the Fourth Proportional to 3,613.98, 5,420.97 and 1,422.12

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Solution

The fourth proportional to 3,613.98, 5,420.97 and 1,422.12 is: 2,133.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.98 : 5,420.97 = 1,422.12 : x
  2. Step 2: Convert to fraction form
    3,613.98/5,420.97 = 1,422.12/x
  3. Step 3: Cross multiply
    3,613.98x = 5,420.97 × 1,422.12
  4. Step 4: Simplify right side
    3,613.98x = 7,709,269.86
  5. Step 5: Solve for x
    x = 7,709,269.86/3,613.98
  6. Step 6: Final answer
    x = 2,133.18

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Similar ratio
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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.