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Finding the Fourth Proportional to 6,620.54, 9,932.63 and 3,110.40

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Solution

The fourth proportional to 6,620.54, 9,932.63 and 3,110.40 is: 4,666.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.54 : 9,932.63 = 3,110.40 : x
  2. Step 2: Convert to fraction form
    6,620.54/9,932.63 = 3,110.40/x
  3. Step 3: Cross multiply
    6,620.54x = 9,932.63 × 3,110.40
  4. Step 4: Simplify right side
    6,620.54x = 30,894,436.80
  5. Step 5: Solve for x
    x = 30,894,436.80/6,620.54
  6. Step 6: Final answer
    x = 4,666.46

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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.