Home / 8,778.78-13,171.68-3,851.28

Finding the Fourth Proportional to 8,778.78, 13,171.68 and 3,851.28

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Solution

The fourth proportional to 8,778.78, 13,171.68 and 3,851.28 is: 5,778.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.78 : 13,171.68 = 3,851.28 : x
  2. Step 2: Convert to fraction form
    8,778.78/13,171.68 = 3,851.28/x
  3. Step 3: Cross multiply
    8,778.78x = 13,171.68 × 3,851.28
  4. Step 4: Simplify right side
    8,778.78x = 50,727,827.75
  5. Step 5: Solve for x
    x = 50,727,827.75/8,778.78
  6. Step 6: Final answer
    x = 5,778.46

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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.