Home / 5,120.66-7,686.24-3,177.46

Finding the Fourth Proportional to 5,120.66, 7,686.24 and 3,177.46

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Solution

The fourth proportional to 5,120.66, 7,686.24 and 3,177.46 is: 4,769.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.66 : 7,686.24 = 3,177.46 : x
  2. Step 2: Convert to fraction form
    5,120.66/7,686.24 = 3,177.46/x
  3. Step 3: Cross multiply
    5,120.66x = 7,686.24 × 3,177.46
  4. Step 4: Simplify right side
    5,120.66x = 24,422,720.15
  5. Step 5: Solve for x
    x = 24,422,720.15/5,120.66
  6. Step 6: Final answer
    x = 4,769.45

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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.