Home / 3,743.20-5,613.76-1,111.28

Finding the Fourth Proportional to 3,743.20, 5,613.76 and 1,111.28

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Solution

The fourth proportional to 3,743.20, 5,613.76 and 1,111.28 is: 1,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,743.20 : 5,613.76 = 1,111.28 : x
  2. Step 2: Convert to fraction form
    3,743.20/5,613.76 = 1,111.28/x
  3. Step 3: Cross multiply
    3,743.20x = 5,613.76 × 1,111.28
  4. Step 4: Simplify right side
    3,743.20x = 6,238,459.21
  5. Step 5: Solve for x
    x = 6,238,459.21/3,743.20
  6. Step 6: Final answer
    x = 1,666.61

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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.