Home / 4,172.16-6,253.92-1,979.22

Finding the Fourth Proportional to 4,172.16, 6,253.92 and 1,979.22

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Solution

The fourth proportional to 4,172.16, 6,253.92 and 1,979.22 is: 2,966.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,172.16 : 6,253.92 = 1,979.22 : x
  2. Step 2: Convert to fraction form
    4,172.16/6,253.92 = 1,979.22/x
  3. Step 3: Cross multiply
    4,172.16x = 6,253.92 × 1,979.22
  4. Step 4: Simplify right side
    4,172.16x = 12,377,883.54
  5. Step 5: Solve for x
    x = 12,377,883.54/4,172.16
  6. Step 6: Final answer
    x = 2,966.78

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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.