Home / 2,290.82-3,161.34-1,242.88

Finding the Fourth Proportional to 2,290.82, 3,161.34 and 1,242.88

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Solution

The fourth proportional to 2,290.82, 3,161.34 and 1,242.88 is: 1,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.82 : 3,161.34 = 1,242.88 : x
  2. Step 2: Convert to fraction form
    2,290.82/3,161.34 = 1,242.88/x
  3. Step 3: Cross multiply
    2,290.82x = 3,161.34 × 1,242.88
  4. Step 4: Simplify right side
    2,290.82x = 3,929,158.36
  5. Step 5: Solve for x
    x = 3,929,158.36/2,290.82
  6. Step 6: Final answer
    x = 1,715.18

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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.