Home / 8,112.56-12,160.53-3,175.47

Finding the Fourth Proportional to 8,112.56, 12,160.53 and 3,175.47

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Solution

The fourth proportional to 8,112.56, 12,160.53 and 3,175.47 is: 4,759.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.56 : 12,160.53 = 3,175.47 : x
  2. Step 2: Convert to fraction form
    8,112.56/12,160.53 = 3,175.47/x
  3. Step 3: Cross multiply
    8,112.56x = 12,160.53 × 3,175.47
  4. Step 4: Simplify right side
    8,112.56x = 38,615,398.20
  5. Step 5: Solve for x
    x = 38,615,398.20/8,112.56
  6. Step 6: Final answer
    x = 4,759.96

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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.