Home / 2,238.20-3,355.92-1,005.40

Finding the Fourth Proportional to 2,238.20, 3,355.92 and 1,005.40

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Solution

The fourth proportional to 2,238.20, 3,355.92 and 1,005.40 is: 1,507.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,238.20 : 3,355.92 = 1,005.40 : x
  2. Step 2: Convert to fraction form
    2,238.20/3,355.92 = 1,005.40/x
  3. Step 3: Cross multiply
    2,238.20x = 3,355.92 × 1,005.40
  4. Step 4: Simplify right side
    2,238.20x = 3,374,041.97
  5. Step 5: Solve for x
    x = 3,374,041.97/2,238.20
  6. Step 6: Final answer
    x = 1,507.48

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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.