Home / 3,984.38-5,977.65-1,387.52

Finding the Fourth Proportional to 3,984.38, 5,977.65 and 1,387.52

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Solution

The fourth proportional to 3,984.38, 5,977.65 and 1,387.52 is: 2,081.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.38 : 5,977.65 = 1,387.52 : x
  2. Step 2: Convert to fraction form
    3,984.38/5,977.65 = 1,387.52/x
  3. Step 3: Cross multiply
    3,984.38x = 5,977.65 × 1,387.52
  4. Step 4: Simplify right side
    3,984.38x = 8,294,108.93
  5. Step 5: Solve for x
    x = 8,294,108.93/3,984.38
  6. Step 6: Final answer
    x = 2,081.66

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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.