Home / 5,180.91-7,768.80-2,218.92

Finding the Fourth Proportional to 5,180.91, 7,768.80 and 2,218.92

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Solution

The fourth proportional to 5,180.91, 7,768.80 and 2,218.92 is: 3,327.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.91 : 7,768.80 = 2,218.92 : x
  2. Step 2: Convert to fraction form
    5,180.91/7,768.80 = 2,218.92/x
  3. Step 3: Cross multiply
    5,180.91x = 7,768.80 × 2,218.92
  4. Step 4: Simplify right side
    5,180.91x = 17,238,345.70
  5. Step 5: Solve for x
    x = 17,238,345.70/5,180.91
  6. Step 6: Final answer
    x = 3,327.28

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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.