Home / 1,991.13-2,748.11-1,244.85

Finding the Fourth Proportional to 1,991.13, 2,748.11 and 1,244.85

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Solution

The fourth proportional to 1,991.13, 2,748.11 and 1,244.85 is: 1,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.13 : 2,748.11 = 1,244.85 : x
  2. Step 2: Convert to fraction form
    1,991.13/2,748.11 = 1,244.85/x
  3. Step 3: Cross multiply
    1,991.13x = 2,748.11 × 1,244.85
  4. Step 4: Simplify right side
    1,991.13x = 3,420,978.51
  5. Step 5: Solve for x
    x = 3,420,978.51/1,991.13
  6. Step 6: Final answer
    x = 1,718.11

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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.