Home / 2,517.81-3,474.20-1,398.74

Finding the Fourth Proportional to 2,517.81, 3,474.20 and 1,398.74

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Solution

The fourth proportional to 2,517.81, 3,474.20 and 1,398.74 is: 1,930.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.81 : 3,474.20 = 1,398.74 : x
  2. Step 2: Convert to fraction form
    2,517.81/3,474.20 = 1,398.74/x
  3. Step 3: Cross multiply
    2,517.81x = 3,474.20 × 1,398.74
  4. Step 4: Simplify right side
    2,517.81x = 4,859,504.20
  5. Step 5: Solve for x
    x = 4,859,504.20/2,517.81
  6. Step 6: Final answer
    x = 1,930.05

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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.