Home / 1,781.10-2,672.60-741.82

Finding the Fourth Proportional to 1,781.10, 2,672.60 and 741.82

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Solution

The fourth proportional to 1,781.10, 2,672.60 and 741.82 is: 1,113.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.10 : 2,672.60 = 741.82 : x
  2. Step 2: Convert to fraction form
    1,781.10/2,672.60 = 741.82/x
  3. Step 3: Cross multiply
    1,781.10x = 2,672.60 × 741.82
  4. Step 4: Simplify right side
    1,781.10x = 1,982,574.77
  5. Step 5: Solve for x
    x = 1,982,574.77/1,781.10
  6. Step 6: Final answer
    x = 1,113.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.