Home / 3,812.85-5,260.68-2,240.64

Finding the Fourth Proportional to 3,812.85, 5,260.68 and 2,240.64

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Solution

The fourth proportional to 3,812.85, 5,260.68 and 2,240.64 is: 3,091.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.85 : 5,260.68 = 2,240.64 : x
  2. Step 2: Convert to fraction form
    3,812.85/5,260.68 = 2,240.64/x
  3. Step 3: Cross multiply
    3,812.85x = 5,260.68 × 2,240.64
  4. Step 4: Simplify right side
    3,812.85x = 11,787,290.04
  5. Step 5: Solve for x
    x = 11,787,290.04/3,812.85
  6. Step 6: Final answer
    x = 3,091.46

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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.