Home / 5,177.80-7,145.70-3,081.64

Finding the Fourth Proportional to 5,177.80, 7,145.70 and 3,081.64

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Solution

The fourth proportional to 5,177.80, 7,145.70 and 3,081.64 is: 4,252.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.80 : 7,145.70 = 3,081.64 : x
  2. Step 2: Convert to fraction form
    5,177.80/7,145.70 = 3,081.64/x
  3. Step 3: Cross multiply
    5,177.80x = 7,145.70 × 3,081.64
  4. Step 4: Simplify right side
    5,177.80x = 22,020,474.95
  5. Step 5: Solve for x
    x = 22,020,474.95/5,177.80
  6. Step 6: Final answer
    x = 4,252.86

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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.