Home / 2,619.28-3,614.80-1,440.38

Finding the Fourth Proportional to 2,619.28, 3,614.80 and 1,440.38

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Solution

The fourth proportional to 2,619.28, 3,614.80 and 1,440.38 is: 1,987.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.28 : 3,614.80 = 1,440.38 : x
  2. Step 2: Convert to fraction form
    2,619.28/3,614.80 = 1,440.38/x
  3. Step 3: Cross multiply
    2,619.28x = 3,614.80 × 1,440.38
  4. Step 4: Simplify right side
    2,619.28x = 5,206,685.62
  5. Step 5: Solve for x
    x = 5,206,685.62/2,619.28
  6. Step 6: Final answer
    x = 1,987.83

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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.