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Finding the Fourth Proportional to 6,630.56, 9,947.78 and 2,679.78

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Solution

The fourth proportional to 6,630.56, 9,947.78 and 2,679.78 is: 4,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.56 : 9,947.78 = 2,679.78 : x
  2. Step 2: Convert to fraction form
    6,630.56/9,947.78 = 2,679.78/x
  3. Step 3: Cross multiply
    6,630.56x = 9,947.78 × 2,679.78
  4. Step 4: Simplify right side
    6,630.56x = 26,657,861.89
  5. Step 5: Solve for x
    x = 26,657,861.89/6,630.56
  6. Step 6: Final answer
    x = 4,020.45

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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.