Home / 1,991.02-2,741.30-1,517.39

Finding the Fourth Proportional to 1,991.02, 2,741.30 and 1,517.39

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Solution

The fourth proportional to 1,991.02, 2,741.30 and 1,517.39 is: 2,089.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.02 : 2,741.30 = 1,517.39 : x
  2. Step 2: Convert to fraction form
    1,991.02/2,741.30 = 1,517.39/x
  3. Step 3: Cross multiply
    1,991.02x = 2,741.30 × 1,517.39
  4. Step 4: Simplify right side
    1,991.02x = 4,159,621.21
  5. Step 5: Solve for x
    x = 4,159,621.21/1,991.02
  6. Step 6: Final answer
    x = 2,089.19

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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.