Home / 3,113.78-4,662.43-2,568.40

Finding the Fourth Proportional to 3,113.78, 4,662.43 and 2,568.40

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Solution

The fourth proportional to 3,113.78, 4,662.43 and 2,568.40 is: 3,845.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.78 : 4,662.43 = 2,568.40 : x
  2. Step 2: Convert to fraction form
    3,113.78/4,662.43 = 2,568.40/x
  3. Step 3: Cross multiply
    3,113.78x = 4,662.43 × 2,568.40
  4. Step 4: Simplify right side
    3,113.78x = 11,974,955.48
  5. Step 5: Solve for x
    x = 11,974,955.48/3,113.78
  6. Step 6: Final answer
    x = 3,845.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.