Home / 5,121.39-7,068.12-3,132.22

Finding the Fourth Proportional to 5,121.39, 7,068.12 and 3,132.22

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Solution

The fourth proportional to 5,121.39, 7,068.12 and 3,132.22 is: 4,322.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.39 : 7,068.12 = 3,132.22 : x
  2. Step 2: Convert to fraction form
    5,121.39/7,068.12 = 3,132.22/x
  3. Step 3: Cross multiply
    5,121.39x = 7,068.12 × 3,132.22
  4. Step 4: Simplify right side
    5,121.39x = 22,138,906.83
  5. Step 5: Solve for x
    x = 22,138,906.83/5,121.39
  6. Step 6: Final answer
    x = 4,322.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.