Home / 1,292.39-1,940.70-1,226.66

Finding the Fourth Proportional to 1,292.39, 1,940.70 and 1,226.66

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Solution

The fourth proportional to 1,292.39, 1,940.70 and 1,226.66 is: 1,842.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.39 : 1,940.70 = 1,226.66 : x
  2. Step 2: Convert to fraction form
    1,292.39/1,940.70 = 1,226.66/x
  3. Step 3: Cross multiply
    1,292.39x = 1,940.70 × 1,226.66
  4. Step 4: Simplify right side
    1,292.39x = 2,380,569.36
  5. Step 5: Solve for x
    x = 2,380,569.36/1,292.39
  6. Step 6: Final answer
    x = 1,842.00

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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.