Home / 1,291.23-1,938.42-1,226.66

Finding the Fourth Proportional to 1,291.23, 1,938.42 and 1,226.66

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Solution

The fourth proportional to 1,291.23, 1,938.42 and 1,226.66 is: 1,841.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.23 : 1,938.42 = 1,226.66 : x
  2. Step 2: Convert to fraction form
    1,291.23/1,938.42 = 1,226.66/x
  3. Step 3: Cross multiply
    1,291.23x = 1,938.42 × 1,226.66
  4. Step 4: Simplify right side
    1,291.23x = 2,377,772.59
  5. Step 5: Solve for x
    x = 2,377,772.59/1,291.23
  6. Step 6: Final answer
    x = 1,841.48

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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.