Home / 2,278.43-3,143.97-1,283.68

Finding the Fourth Proportional to 2,278.43, 3,143.97 and 1,283.68

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Solution

The fourth proportional to 2,278.43, 3,143.97 and 1,283.68 is: 1,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.43 : 3,143.97 = 1,283.68 : x
  2. Step 2: Convert to fraction form
    2,278.43/3,143.97 = 1,283.68/x
  3. Step 3: Cross multiply
    2,278.43x = 3,143.97 × 1,283.68
  4. Step 4: Simplify right side
    2,278.43x = 4,035,851.41
  5. Step 5: Solve for x
    x = 4,035,851.41/2,278.43
  6. Step 6: Final answer
    x = 1,771.33

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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.