Home / 1,440.38-2,160.15-516.14

Finding the Fourth Proportional to 1,440.38, 2,160.15 and 516.14

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Solution

The fourth proportional to 1,440.38, 2,160.15 and 516.14 is: 774.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.38 : 2,160.15 = 516.14 : x
  2. Step 2: Convert to fraction form
    1,440.38/2,160.15 = 516.14/x
  3. Step 3: Cross multiply
    1,440.38x = 2,160.15 × 516.14
  4. Step 4: Simplify right side
    1,440.38x = 1,114,939.82
  5. Step 5: Solve for x
    x = 1,114,939.82/1,440.38
  6. Step 6: Final answer
    x = 774.06

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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.