Home / 1,991.19-2,748.36-1,244.73

Finding the Fourth Proportional to 1,991.19, 2,748.36 and 1,244.73

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Solution

The fourth proportional to 1,991.19, 2,748.36 and 1,244.73 is: 1,718.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.19 : 2,748.36 = 1,244.73 : x
  2. Step 2: Convert to fraction form
    1,991.19/2,748.36 = 1,244.73/x
  3. Step 3: Cross multiply
    1,991.19x = 2,748.36 × 1,244.73
  4. Step 4: Simplify right side
    1,991.19x = 3,420,966.14
  5. Step 5: Solve for x
    x = 3,420,966.14/1,991.19
  6. Step 6: Final answer
    x = 1,718.05

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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.