Home / 5,145.78-7,101.30-3,049.92

Finding the Fourth Proportional to 5,145.78, 7,101.30 and 3,049.92

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Solution

The fourth proportional to 5,145.78, 7,101.30 and 3,049.92 is: 4,208.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.78 : 7,101.30 = 3,049.92 : x
  2. Step 2: Convert to fraction form
    5,145.78/7,101.30 = 3,049.92/x
  3. Step 3: Cross multiply
    5,145.78x = 7,101.30 × 3,049.92
  4. Step 4: Simplify right side
    5,145.78x = 21,658,396.90
  5. Step 5: Solve for x
    x = 21,658,396.90/5,145.78
  6. Step 6: Final answer
    x = 4,208.96

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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.