Home / 4,119.78-5,685.24-2,256.78

Finding the Fourth Proportional to 4,119.78, 5,685.24 and 2,256.78

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Solution

The fourth proportional to 4,119.78, 5,685.24 and 2,256.78 is: 3,114.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,119.78 : 5,685.24 = 2,256.78 : x
  2. Step 2: Convert to fraction form
    4,119.78/5,685.24 = 2,256.78/x
  3. Step 3: Cross multiply
    4,119.78x = 5,685.24 × 2,256.78
  4. Step 4: Simplify right side
    4,119.78x = 12,830,335.93
  5. Step 5: Solve for x
    x = 12,830,335.93/4,119.78
  6. Step 6: Final answer
    x = 3,114.33

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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.