Home / 5,130.06-7,695.10-3,961.78

Finding the Fourth Proportional to 5,130.06, 7,695.10 and 3,961.78

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Solution

The fourth proportional to 5,130.06, 7,695.10 and 3,961.78 is: 5,942.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.06 : 7,695.10 = 3,961.78 : x
  2. Step 2: Convert to fraction form
    5,130.06/7,695.10 = 3,961.78/x
  3. Step 3: Cross multiply
    5,130.06x = 7,695.10 × 3,961.78
  4. Step 4: Simplify right side
    5,130.06x = 30,486,293.28
  5. Step 5: Solve for x
    x = 30,486,293.28/5,130.06
  6. Step 6: Final answer
    x = 5,942.68

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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.