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Finding the Fourth Proportional to 3,866.88, 5,328 and 3,167.04

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Solution

The fourth proportional to 3,866.88, 5,328 and 3,167.04 is: 4,363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.88 : 5,328 = 3,167.04 : x
  2. Step 2: Convert to fraction form
    3,866.88/5,328 = 3,167.04/x
  3. Step 3: Cross multiply
    3,866.88x = 5,328 × 3,167.04
  4. Step 4: Simplify right side
    3,866.88x = 16,873,989.12
  5. Step 5: Solve for x
    x = 16,873,989.12/3,866.88
  6. Step 6: Final answer
    x = 4,363.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.