Home / 2,447.87-3,378.06-1,328.80

Finding the Fourth Proportional to 2,447.87, 3,378.06 and 1,328.80

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Solution

The fourth proportional to 2,447.87, 3,378.06 and 1,328.80 is: 1,833.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.87 : 3,378.06 = 1,328.80 : x
  2. Step 2: Convert to fraction form
    2,447.87/3,378.06 = 1,328.80/x
  3. Step 3: Cross multiply
    2,447.87x = 3,378.06 × 1,328.80
  4. Step 4: Simplify right side
    2,447.87x = 4,488,767.93
  5. Step 5: Solve for x
    x = 4,488,767.93/2,447.87
  6. Step 6: Final answer
    x = 1,833.75

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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.