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Finding the Fourth Proportional to 6,654.30, 9,999.72 and 6,220.90

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Solution

The fourth proportional to 6,654.30, 9,999.72 and 6,220.90 is: 9,348.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,654.30 : 9,999.72 = 6,220.90 : x
  2. Step 2: Convert to fraction form
    6,654.30/9,999.72 = 6,220.90/x
  3. Step 3: Cross multiply
    6,654.30x = 9,999.72 × 6,220.90
  4. Step 4: Simplify right side
    6,654.30x = 62,207,258.15
  5. Step 5: Solve for x
    x = 62,207,258.15/6,654.30
  6. Step 6: Final answer
    x = 9,348.43

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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.