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Finding the Fourth Proportional to 6,659.76, 9,191.16 and 3,865.08

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Solution

The fourth proportional to 6,659.76, 9,191.16 and 3,865.08 is: 5,334.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659.76 : 9,191.16 = 3,865.08 : x
  2. Step 2: Convert to fraction form
    6,659.76/9,191.16 = 3,865.08/x
  3. Step 3: Cross multiply
    6,659.76x = 9,191.16 × 3,865.08
  4. Step 4: Simplify right side
    6,659.76x = 35,524,568.69
  5. Step 5: Solve for x
    x = 35,524,568.69/6,659.76
  6. Step 6: Final answer
    x = 5,334.21

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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.