Home / 3,125.20-4,689.60-1,178.76

Finding the Fourth Proportional to 3,125.20, 4,689.60 and 1,178.76

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Solution

The fourth proportional to 3,125.20, 4,689.60 and 1,178.76 is: 1,768.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.20 : 4,689.60 = 1,178.76 : x
  2. Step 2: Convert to fraction form
    3,125.20/4,689.60 = 1,178.76/x
  3. Step 3: Cross multiply
    3,125.20x = 4,689.60 × 1,178.76
  4. Step 4: Simplify right side
    3,125.20x = 5,527,912.90
  5. Step 5: Solve for x
    x = 5,527,912.90/3,125.20
  6. Step 6: Final answer
    x = 1,768.82

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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.