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Finding the Fourth Proportional to 6,422.92, 8,865.84 and 3,771.16

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Solution

The fourth proportional to 6,422.92, 8,865.84 and 3,771.16 is: 5,205.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.92 : 8,865.84 = 3,771.16 : x
  2. Step 2: Convert to fraction form
    6,422.92/8,865.84 = 3,771.16/x
  3. Step 3: Cross multiply
    6,422.92x = 8,865.84 × 3,771.16
  4. Step 4: Simplify right side
    6,422.92x = 33,434,501.17
  5. Step 5: Solve for x
    x = 33,434,501.17/6,422.92
  6. Step 6: Final answer
    x = 5,205.50

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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.