Home / 8,138.97-11,235.96-5,310.45

Finding the Fourth Proportional to 8,138.97, 11,235.96 and 5,310.45

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Solution

The fourth proportional to 8,138.97, 11,235.96 and 5,310.45 is: 7,331.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.97 : 11,235.96 = 5,310.45 : x
  2. Step 2: Convert to fraction form
    8,138.97/11,235.96 = 5,310.45/x
  3. Step 3: Cross multiply
    8,138.97x = 11,235.96 × 5,310.45
  4. Step 4: Simplify right side
    8,138.97x = 59,668,003.78
  5. Step 5: Solve for x
    x = 59,668,003.78/8,138.97
  6. Step 6: Final answer
    x = 7,331.15

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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.