Home / 1,291.82-1,937.75-1,226.18

Finding the Fourth Proportional to 1,291.82, 1,937.75 and 1,226.18

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Solution

The fourth proportional to 1,291.82, 1,937.75 and 1,226.18 is: 1,839.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.82 : 1,937.75 = 1,226.18 : x
  2. Step 2: Convert to fraction form
    1,291.82/1,937.75 = 1,226.18/x
  3. Step 3: Cross multiply
    1,291.82x = 1,937.75 × 1,226.18
  4. Step 4: Simplify right side
    1,291.82x = 2,376,030.30
  5. Step 5: Solve for x
    x = 2,376,030.30/1,291.82
  6. Step 6: Final answer
    x = 1,839.29

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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.