Home / 2,515.40-3,471.19-1,396.31

Finding the Fourth Proportional to 2,515.40, 3,471.19 and 1,396.31

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Solution

The fourth proportional to 2,515.40, 3,471.19 and 1,396.31 is: 1,926.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.40 : 3,471.19 = 1,396.31 : x
  2. Step 2: Convert to fraction form
    2,515.40/3,471.19 = 1,396.31/x
  3. Step 3: Cross multiply
    2,515.40x = 3,471.19 × 1,396.31
  4. Step 4: Simplify right side
    2,515.40x = 4,846,862.50
  5. Step 5: Solve for x
    x = 4,846,862.50/2,515.40
  6. Step 6: Final answer
    x = 1,926.88

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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.