Home / 2,619.20-3,614.40-1,440.26

Finding the Fourth Proportional to 2,619.20, 3,614.40 and 1,440.26

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Solution

The fourth proportional to 2,619.20, 3,614.40 and 1,440.26 is: 1,987.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.20 : 3,614.40 = 1,440.26 : x
  2. Step 2: Convert to fraction form
    2,619.20/3,614.40 = 1,440.26/x
  3. Step 3: Cross multiply
    2,619.20x = 3,614.40 × 1,440.26
  4. Step 4: Simplify right side
    2,619.20x = 5,205,675.74
  5. Step 5: Solve for x
    x = 5,205,675.74/2,619.20
  6. Step 6: Final answer
    x = 1,987.51

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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.