Home / 6,601.20-9,109.12-3,947.64

Finding the Fourth Proportional to 6,601.20, 9,109.12 and 3,947.64

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Solution

The fourth proportional to 6,601.20, 9,109.12 and 3,947.64 is: 5,447.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,601.20 : 9,109.12 = 3,947.64 : x
  2. Step 2: Convert to fraction form
    6,601.20/9,109.12 = 3,947.64/x
  3. Step 3: Cross multiply
    6,601.20x = 9,109.12 × 3,947.64
  4. Step 4: Simplify right side
    6,601.20x = 35,959,526.48
  5. Step 5: Solve for x
    x = 35,959,526.48/6,601.20
  6. Step 6: Final answer
    x = 5,447.42

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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.