Home / 3,121.28-4,680.98-2,572.10

Finding the Fourth Proportional to 3,121.28, 4,680.98 and 2,572.10

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Solution

The fourth proportional to 3,121.28, 4,680.98 and 2,572.10 is: 3,857.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.28 : 4,680.98 = 2,572.10 : x
  2. Step 2: Convert to fraction form
    3,121.28/4,680.98 = 2,572.10/x
  3. Step 3: Cross multiply
    3,121.28x = 4,680.98 × 2,572.10
  4. Step 4: Simplify right side
    3,121.28x = 12,039,948.66
  5. Step 5: Solve for x
    x = 12,039,948.66/3,121.28
  6. Step 6: Final answer
    x = 3,857.38

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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.