Home / 2,283.70-3,151.65-1,288.61

Finding the Fourth Proportional to 2,283.70, 3,151.65 and 1,288.61

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Solution

The fourth proportional to 2,283.70, 3,151.65 and 1,288.61 is: 1,778.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,283.70 : 3,151.65 = 1,288.61 : x
  2. Step 2: Convert to fraction form
    2,283.70/3,151.65 = 1,288.61/x
  3. Step 3: Cross multiply
    2,283.70x = 3,151.65 × 1,288.61
  4. Step 4: Simplify right side
    2,283.70x = 4,061,266.33
  5. Step 5: Solve for x
    x = 4,061,266.33/2,283.70
  6. Step 6: Final answer
    x = 1,778.37

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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.