Home / 2,454.70-3,680.11-1,221.43

Finding the Fourth Proportional to 2,454.70, 3,680.11 and 1,221.43

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Solution

The fourth proportional to 2,454.70, 3,680.11 and 1,221.43 is: 1,831.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.70 : 3,680.11 = 1,221.43 : x
  2. Step 2: Convert to fraction form
    2,454.70/3,680.11 = 1,221.43/x
  3. Step 3: Cross multiply
    2,454.70x = 3,680.11 × 1,221.43
  4. Step 4: Simplify right side
    2,454.70x = 4,495,002.91
  5. Step 5: Solve for x
    x = 4,495,002.91/2,454.70
  6. Step 6: Final answer
    x = 1,831.19

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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.