Home / 3,989.52-5,984.28-1,392.66

Finding the Fourth Proportional to 3,989.52, 5,984.28 and 1,392.66

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Solution

The fourth proportional to 3,989.52, 5,984.28 and 1,392.66 is: 2,088.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.52 : 5,984.28 = 1,392.66 : x
  2. Step 2: Convert to fraction form
    3,989.52/5,984.28 = 1,392.66/x
  3. Step 3: Cross multiply
    3,989.52x = 5,984.28 × 1,392.66
  4. Step 4: Simplify right side
    3,989.52x = 8,334,067.38
  5. Step 5: Solve for x
    x = 8,334,067.38/3,989.52
  6. Step 6: Final answer
    x = 2,088.99

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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.