Home / 3,151.20-4,351.41-1,974.30

Finding the Fourth Proportional to 3,151.20, 4,351.41 and 1,974.30

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Solution

The fourth proportional to 3,151.20, 4,351.41 and 1,974.30 is: 2,726.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.20 : 4,351.41 = 1,974.30 : x
  2. Step 2: Convert to fraction form
    3,151.20/4,351.41 = 1,974.30/x
  3. Step 3: Cross multiply
    3,151.20x = 4,351.41 × 1,974.30
  4. Step 4: Simplify right side
    3,151.20x = 8,590,988.76
  5. Step 5: Solve for x
    x = 8,590,988.76/3,151.20
  6. Step 6: Final answer
    x = 2,726.26

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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.