Home / 3,613.97-5,420.96-1,115.12

Finding the Fourth Proportional to 3,613.97, 5,420.96 and 1,115.12

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Solution

The fourth proportional to 3,613.97, 5,420.96 and 1,115.12 is: 1,672.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.97 : 5,420.96 = 1,115.12 : x
  2. Step 2: Convert to fraction form
    3,613.97/5,420.96 = 1,115.12/x
  3. Step 3: Cross multiply
    3,613.97x = 5,420.96 × 1,115.12
  4. Step 4: Simplify right side
    3,613.97x = 6,044,988.23
  5. Step 5: Solve for x
    x = 6,044,988.23/3,613.97
  6. Step 6: Final answer
    x = 1,672.67

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Double scale
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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.