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Finding the Fourth Proportional to 6,899.82, 9,500.66 and 5,200.79

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Solution

The fourth proportional to 6,899.82, 9,500.66 and 5,200.79 is: 7,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899.82 : 9,500.66 = 5,200.79 : x
  2. Step 2: Convert to fraction form
    6,899.82/9,500.66 = 5,200.79/x
  3. Step 3: Cross multiply
    6,899.82x = 9,500.66 × 5,200.79
  4. Step 4: Simplify right side
    6,899.82x = 49,410,974.28
  5. Step 5: Solve for x
    x = 49,410,974.28/6,899.82
  6. Step 6: Final answer
    x = 7,161.20

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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.