Home / 2,291.88-3,171.13-1,997.76

Finding the Fourth Proportional to 2,291.88, 3,171.13 and 1,997.76

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Solution

The fourth proportional to 2,291.88, 3,171.13 and 1,997.76 is: 2,764.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.88 : 3,171.13 = 1,997.76 : x
  2. Step 2: Convert to fraction form
    2,291.88/3,171.13 = 1,997.76/x
  3. Step 3: Cross multiply
    2,291.88x = 3,171.13 × 1,997.76
  4. Step 4: Simplify right side
    2,291.88x = 6,335,151.67
  5. Step 5: Solve for x
    x = 6,335,151.67/2,291.88
  6. Step 6: Final answer
    x = 2,764.17

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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.