Home / 2,619.20-3,614.50-1,440.28

Finding the Fourth Proportional to 2,619.20, 3,614.50 and 1,440.28

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Solution

The fourth proportional to 2,619.20, 3,614.50 and 1,440.28 is: 1,987.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.20 : 3,614.50 = 1,440.28 : x
  2. Step 2: Convert to fraction form
    2,619.20/3,614.50 = 1,440.28/x
  3. Step 3: Cross multiply
    2,619.20x = 3,614.50 × 1,440.28
  4. Step 4: Simplify right side
    2,619.20x = 5,205,873.99
  5. Step 5: Solve for x
    x = 5,205,873.99/2,619.20
  6. Step 6: Final answer
    x = 1,987.58

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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.