Home / 2,693.56-4,040.70-961.78

Finding the Fourth Proportional to 2,693.56, 4,040.70 and 961.78

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Solution

The fourth proportional to 2,693.56, 4,040.70 and 961.78 is: 1,442.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,693.56 : 4,040.70 = 961.78 : x
  2. Step 2: Convert to fraction form
    2,693.56/4,040.70 = 961.78/x
  3. Step 3: Cross multiply
    2,693.56x = 4,040.70 × 961.78
  4. Step 4: Simplify right side
    2,693.56x = 3,886,264.45
  5. Step 5: Solve for x
    x = 3,886,264.45/2,693.56
  6. Step 6: Final answer
    x = 1,442.80

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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.