Home / 3,451.94-5,177.18-986.11

Finding the Fourth Proportional to 3,451.94, 5,177.18 and 986.11

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Solution

The fourth proportional to 3,451.94, 5,177.18 and 986.11 is: 1,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451.94 : 5,177.18 = 986.11 : x
  2. Step 2: Convert to fraction form
    3,451.94/5,177.18 = 986.11/x
  3. Step 3: Cross multiply
    3,451.94x = 5,177.18 × 986.11
  4. Step 4: Simplify right side
    3,451.94x = 5,105,238.15
  5. Step 5: Solve for x
    x = 5,105,238.15/3,451.94
  6. Step 6: Final answer
    x = 1,478.95

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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.