Home / 5,145.87-7,103.76-3,447.30

Finding the Fourth Proportional to 5,145.87, 7,103.76 and 3,447.30

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Solution

The fourth proportional to 5,145.87, 7,103.76 and 3,447.30 is: 4,758.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.87 : 7,103.76 = 3,447.30 : x
  2. Step 2: Convert to fraction form
    5,145.87/7,103.76 = 3,447.30/x
  3. Step 3: Cross multiply
    5,145.87x = 7,103.76 × 3,447.30
  4. Step 4: Simplify right side
    5,145.87x = 24,488,791.85
  5. Step 5: Solve for x
    x = 24,488,791.85/5,145.87
  6. Step 6: Final answer
    x = 4,758.92

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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.