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Finding the Fourth Proportional to 3,868.97, 5,801.55 and 1,403.42

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Solution

The fourth proportional to 3,868.97, 5,801.55 and 1,403.42 is: 2,104.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.97 : 5,801.55 = 1,403.42 : x
  2. Step 2: Convert to fraction form
    3,868.97/5,801.55 = 1,403.42/x
  3. Step 3: Cross multiply
    3,868.97x = 5,801.55 × 1,403.42
  4. Step 4: Simplify right side
    3,868.97x = 8,142,011.30
  5. Step 5: Solve for x
    x = 8,142,011.30/3,868.97
  6. Step 6: Final answer
    x = 2,104.44

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1.5x scale

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.