Home / 2,327.81-3,212.38-1,279.87

Finding the Fourth Proportional to 2,327.81, 3,212.38 and 1,279.87

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Solution

The fourth proportional to 2,327.81, 3,212.38 and 1,279.87 is: 1,766.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,327.81 : 3,212.38 = 1,279.87 : x
  2. Step 2: Convert to fraction form
    2,327.81/3,212.38 = 1,279.87/x
  3. Step 3: Cross multiply
    2,327.81x = 3,212.38 × 1,279.87
  4. Step 4: Simplify right side
    2,327.81x = 4,111,433.23
  5. Step 5: Solve for x
    x = 4,111,433.23/2,327.81
  6. Step 6: Final answer
    x = 1,766.22

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1.5x scale

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.