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Finding the Fourth Proportional to 3,888.90, 5,365.38 and 2,375.91

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Solution

The fourth proportional to 3,888.90, 5,365.38 and 2,375.91 is: 3,277.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.90 : 5,365.38 = 2,375.91 : x
  2. Step 2: Convert to fraction form
    3,888.90/5,365.38 = 2,375.91/x
  3. Step 3: Cross multiply
    3,888.90x = 5,365.38 × 2,375.91
  4. Step 4: Simplify right side
    3,888.90x = 12,747,660.00
  5. Step 5: Solve for x
    x = 12,747,660.00/3,888.90
  6. Step 6: Final answer
    x = 3,277.96

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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.