Home / 3,138.73-4,331.53-1,722.48

Finding the Fourth Proportional to 3,138.73, 4,331.53 and 1,722.48

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Solution

The fourth proportional to 3,138.73, 4,331.53 and 1,722.48 is: 2,377.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.73 : 4,331.53 = 1,722.48 : x
  2. Step 2: Convert to fraction form
    3,138.73/4,331.53 = 1,722.48/x
  3. Step 3: Cross multiply
    3,138.73x = 4,331.53 × 1,722.48
  4. Step 4: Simplify right side
    3,138.73x = 7,460,973.79
  5. Step 5: Solve for x
    x = 7,460,973.79/3,138.73
  6. Step 6: Final answer
    x = 2,377.07

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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.