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Finding the Fourth Proportional to 6,616.10, 9,930.63 and 5,398.34

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Solution

The fourth proportional to 6,616.10, 9,930.63 and 5,398.34 is: 8,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616.10 : 9,930.63 = 5,398.34 : x
  2. Step 2: Convert to fraction form
    6,616.10/9,930.63 = 5,398.34/x
  3. Step 3: Cross multiply
    6,616.10x = 9,930.63 × 5,398.34
  4. Step 4: Simplify right side
    6,616.10x = 53,608,917.15
  5. Step 5: Solve for x
    x = 53,608,917.15/6,616.10
  6. Step 6: Final answer
    x = 8,102.80

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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.