Home / 4,141.78-5,715.66-2,278.78

Finding the Fourth Proportional to 4,141.78, 5,715.66 and 2,278.78

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Solution

The fourth proportional to 4,141.78, 5,715.66 and 2,278.78 is: 3,144.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,141.78 : 5,715.66 = 2,278.78 : x
  2. Step 2: Convert to fraction form
    4,141.78/5,715.66 = 2,278.78/x
  3. Step 3: Cross multiply
    4,141.78x = 5,715.66 × 2,278.78
  4. Step 4: Simplify right side
    4,141.78x = 13,024,738.84
  5. Step 5: Solve for x
    x = 13,024,738.84/4,141.78
  6. Step 6: Final answer
    x = 3,144.72

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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.