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Finding the Fourth Proportional to 6,600.80, 9,108.24 and 3,947.24

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Solution

The fourth proportional to 6,600.80, 9,108.24 and 3,947.24 is: 5,446.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600.80 : 9,108.24 = 3,947.24 : x
  2. Step 2: Convert to fraction form
    6,600.80/9,108.24 = 3,947.24/x
  3. Step 3: Cross multiply
    6,600.80x = 9,108.24 × 3,947.24
  4. Step 4: Simplify right side
    6,600.80x = 35,952,409.26
  5. Step 5: Solve for x
    x = 35,952,409.26/6,600.80
  6. Step 6: Final answer
    x = 5,446.67

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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.