Home / 1,440.27-2,160.44-515.88

Finding the Fourth Proportional to 1,440.27, 2,160.44 and 515.88

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Solution

The fourth proportional to 1,440.27, 2,160.44 and 515.88 is: 773.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.27 : 2,160.44 = 515.88 : x
  2. Step 2: Convert to fraction form
    1,440.27/2,160.44 = 515.88/x
  3. Step 3: Cross multiply
    1,440.27x = 2,160.44 × 515.88
  4. Step 4: Simplify right side
    1,440.27x = 1,114,525.21
  5. Step 5: Solve for x
    x = 1,114,525.21/1,440.27
  6. Step 6: Final answer
    x = 773.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.