Home / 2,262.12-3,121.92-1,378.08

Finding the Fourth Proportional to 2,262.12, 3,121.92 and 1,378.08

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Solution

The fourth proportional to 2,262.12, 3,121.92 and 1,378.08 is: 1,901.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,262.12 : 3,121.92 = 1,378.08 : x
  2. Step 2: Convert to fraction form
    2,262.12/3,121.92 = 1,378.08/x
  3. Step 3: Cross multiply
    2,262.12x = 3,121.92 × 1,378.08
  4. Step 4: Simplify right side
    2,262.12x = 4,302,255.51
  5. Step 5: Solve for x
    x = 4,302,255.51/2,262.12
  6. Step 6: Final answer
    x = 1,901.87

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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.