Home / 2,515.80-3,471.84-1,520.90

Finding the Fourth Proportional to 2,515.80, 3,471.84 and 1,520.90

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Solution

The fourth proportional to 2,515.80, 3,471.84 and 1,520.90 is: 2,098.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.80 : 3,471.84 = 1,520.90 : x
  2. Step 2: Convert to fraction form
    2,515.80/3,471.84 = 1,520.90/x
  3. Step 3: Cross multiply
    2,515.80x = 3,471.84 × 1,520.90
  4. Step 4: Simplify right side
    2,515.80x = 5,280,321.46
  5. Step 5: Solve for x
    x = 5,280,321.46/2,515.80
  6. Step 6: Final answer
    x = 2,098.86

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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.