Home / 2,478.28-3,712.20-1,178.44

Finding the Fourth Proportional to 2,478.28, 3,712.20 and 1,178.44

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Solution

The fourth proportional to 2,478.28, 3,712.20 and 1,178.44 is: 1,765.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.28 : 3,712.20 = 1,178.44 : x
  2. Step 2: Convert to fraction form
    2,478.28/3,712.20 = 1,178.44/x
  3. Step 3: Cross multiply
    2,478.28x = 3,712.20 × 1,178.44
  4. Step 4: Simplify right side
    2,478.28x = 4,374,604.97
  5. Step 5: Solve for x
    x = 4,374,604.97/2,478.28
  6. Step 6: Final answer
    x = 1,765.18

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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.