Home / 3,130.20-4,672.14-2,761.20

Finding the Fourth Proportional to 3,130.20, 4,672.14 and 2,761.20

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Solution

The fourth proportional to 3,130.20, 4,672.14 and 2,761.20 is: 4,121.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.20 : 4,672.14 = 2,761.20 : x
  2. Step 2: Convert to fraction form
    3,130.20/4,672.14 = 2,761.20/x
  3. Step 3: Cross multiply
    3,130.20x = 4,672.14 × 2,761.20
  4. Step 4: Simplify right side
    3,130.20x = 12,900,712.97
  5. Step 5: Solve for x
    x = 12,900,712.97/3,130.20
  6. Step 6: Final answer
    x = 4,121.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.