Home / 2,515.90-3,471.40-1,520.98

Finding the Fourth Proportional to 2,515.90, 3,471.40 and 1,520.98

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Solution

The fourth proportional to 2,515.90, 3,471.40 and 1,520.98 is: 2,098.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.90 : 3,471.40 = 1,520.98 : x
  2. Step 2: Convert to fraction form
    2,515.90/3,471.40 = 1,520.98/x
  3. Step 3: Cross multiply
    2,515.90x = 3,471.40 × 1,520.98
  4. Step 4: Simplify right side
    2,515.90x = 5,279,929.97
  5. Step 5: Solve for x
    x = 5,279,929.97/2,515.90
  6. Step 6: Final answer
    x = 2,098.62

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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.