Home / 5,177.28-7,145.28-3,081.36

Finding the Fourth Proportional to 5,177.28, 7,145.28 and 3,081.36

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Solution

The fourth proportional to 5,177.28, 7,145.28 and 3,081.36 is: 4,252.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.28 : 7,145.28 = 3,081.36 : x
  2. Step 2: Convert to fraction form
    5,177.28/7,145.28 = 3,081.36/x
  3. Step 3: Cross multiply
    5,177.28x = 7,145.28 × 3,081.36
  4. Step 4: Simplify right side
    5,177.28x = 22,017,179.98
  5. Step 5: Solve for x
    x = 22,017,179.98/5,177.28
  6. Step 6: Final answer
    x = 4,252.65

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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.