Home / 3,060.50-4,591.10-979.78

Finding the Fourth Proportional to 3,060.50, 4,591.10 and 979.78

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Solution

The fourth proportional to 3,060.50, 4,591.10 and 979.78 is: 1,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,060.50 : 4,591.10 = 979.78 : x
  2. Step 2: Convert to fraction form
    3,060.50/4,591.10 = 979.78/x
  3. Step 3: Cross multiply
    3,060.50x = 4,591.10 × 979.78
  4. Step 4: Simplify right side
    3,060.50x = 4,498,254.41
  5. Step 5: Solve for x
    x = 4,498,254.41/3,060.50
  6. Step 6: Final answer
    x = 1,469.78

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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.