Home / 8,839.78-13,261.28-3,909.58

Finding the Fourth Proportional to 8,839.78, 13,261.28 and 3,909.58

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Solution

The fourth proportional to 8,839.78, 13,261.28 and 3,909.58 is: 5,865.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,839.78 : 13,261.28 = 3,909.58 : x
  2. Step 2: Convert to fraction form
    8,839.78/13,261.28 = 3,909.58/x
  3. Step 3: Cross multiply
    8,839.78x = 13,261.28 × 3,909.58
  4. Step 4: Simplify right side
    8,839.78x = 51,846,035.06
  5. Step 5: Solve for x
    x = 51,846,035.06/8,839.78
  6. Step 6: Final answer
    x = 5,865.08

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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.