Home / 3,170.31-4,755.45-1,221.14

Finding the Fourth Proportional to 3,170.31, 4,755.45 and 1,221.14

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Solution

The fourth proportional to 3,170.31, 4,755.45 and 1,221.14 is: 1,831.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.31 : 4,755.45 = 1,221.14 : x
  2. Step 2: Convert to fraction form
    3,170.31/4,755.45 = 1,221.14/x
  3. Step 3: Cross multiply
    3,170.31x = 4,755.45 × 1,221.14
  4. Step 4: Simplify right side
    3,170.31x = 5,807,070.21
  5. Step 5: Solve for x
    x = 5,807,070.21/3,170.31
  6. Step 6: Final answer
    x = 1,831.71

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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.