Home / 5,131.62-7,081.64-2,773.76

Finding the Fourth Proportional to 5,131.62, 7,081.64 and 2,773.76

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Solution

The fourth proportional to 5,131.62, 7,081.64 and 2,773.76 is: 3,827.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.62 : 7,081.64 = 2,773.76 : x
  2. Step 2: Convert to fraction form
    5,131.62/7,081.64 = 2,773.76/x
  3. Step 3: Cross multiply
    5,131.62x = 7,081.64 × 2,773.76
  4. Step 4: Simplify right side
    5,131.62x = 19,642,755.90
  5. Step 5: Solve for x
    x = 19,642,755.90/5,131.62
  6. Step 6: Final answer
    x = 3,827.79

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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.