Home / 8,117.78-11,202.72-5,286.56

Finding the Fourth Proportional to 8,117.78, 11,202.72 and 5,286.56

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Solution

The fourth proportional to 8,117.78, 11,202.72 and 5,286.56 is: 7,295.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.78 : 11,202.72 = 5,286.56 : x
  2. Step 2: Convert to fraction form
    8,117.78/11,202.72 = 5,286.56/x
  3. Step 3: Cross multiply
    8,117.78x = 11,202.72 × 5,286.56
  4. Step 4: Simplify right side
    8,117.78x = 59,223,851.44
  5. Step 5: Solve for x
    x = 59,223,851.44/8,117.78
  6. Step 6: Final answer
    x = 7,295.57

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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.