Home / 2,073.25-3,110.46-840.39

Finding the Fourth Proportional to 2,073.25, 3,110.46 and 840.39

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Solution

The fourth proportional to 2,073.25, 3,110.46 and 840.39 is: 1,260.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,073.25 : 3,110.46 = 840.39 : x
  2. Step 2: Convert to fraction form
    2,073.25/3,110.46 = 840.39/x
  3. Step 3: Cross multiply
    2,073.25x = 3,110.46 × 840.39
  4. Step 4: Simplify right side
    2,073.25x = 2,613,999.48
  5. Step 5: Solve for x
    x = 2,613,999.48/2,073.25
  6. Step 6: Final answer
    x = 1,260.82

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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.