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Finding the Fourth Proportional to 2,891.98, 3,991.13 and 1,632.59

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Solution

The fourth proportional to 2,891.98, 3,991.13 and 1,632.59 is: 2,253.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.98 : 3,991.13 = 1,632.59 : x
  2. Step 2: Convert to fraction form
    2,891.98/3,991.13 = 1,632.59/x
  3. Step 3: Cross multiply
    2,891.98x = 3,991.13 × 1,632.59
  4. Step 4: Simplify right side
    2,891.98x = 6,515,878.93
  5. Step 5: Solve for x
    x = 6,515,878.93/2,891.98
  6. Step 6: Final answer
    x = 2,253.09

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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.