Home / 1,226.62-1,691.67-976.06

Finding the Fourth Proportional to 1,226.62, 1,691.67 and 976.06

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Solution

The fourth proportional to 1,226.62, 1,691.67 and 976.06 is: 1,346.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.62 : 1,691.67 = 976.06 : x
  2. Step 2: Convert to fraction form
    1,226.62/1,691.67 = 976.06/x
  3. Step 3: Cross multiply
    1,226.62x = 1,691.67 × 976.06
  4. Step 4: Simplify right side
    1,226.62x = 1,651,171.42
  5. Step 5: Solve for x
    x = 1,651,171.42/1,226.62
  6. Step 6: Final answer
    x = 1,346.11

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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.