Home / 1,991.20-2,746.02-1,244.92

Finding the Fourth Proportional to 1,991.20, 2,746.02 and 1,244.92

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Solution

The fourth proportional to 1,991.20, 2,746.02 and 1,244.92 is: 1,716.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.20 : 2,746.02 = 1,244.92 : x
  2. Step 2: Convert to fraction form
    1,991.20/2,746.02 = 1,244.92/x
  3. Step 3: Cross multiply
    1,991.20x = 2,746.02 × 1,244.92
  4. Step 4: Simplify right side
    1,991.20x = 3,418,575.22
  5. Step 5: Solve for x
    x = 3,418,575.22/1,991.20
  6. Step 6: Final answer
    x = 1,716.84

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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.