Home / 2,515.29-3,470.92-1,396.20

Finding the Fourth Proportional to 2,515.29, 3,470.92 and 1,396.20

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Solution

The fourth proportional to 2,515.29, 3,470.92 and 1,396.20 is: 1,926.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.29 : 3,470.92 = 1,396.20 : x
  2. Step 2: Convert to fraction form
    2,515.29/3,470.92 = 1,396.20/x
  3. Step 3: Cross multiply
    2,515.29x = 3,470.92 × 1,396.20
  4. Step 4: Simplify right side
    2,515.29x = 4,846,108.03
  5. Step 5: Solve for x
    x = 4,846,108.03/2,515.29
  6. Step 6: Final answer
    x = 1,926.66

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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.