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Finding the Fourth Proportional to 5,945.28, 8,920.80 and 2,660.64

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Solution

The fourth proportional to 5,945.28, 8,920.80 and 2,660.64 is: 3,992.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,945.28 : 8,920.80 = 2,660.64 : x
  2. Step 2: Convert to fraction form
    5,945.28/8,920.80 = 2,660.64/x
  3. Step 3: Cross multiply
    5,945.28x = 8,920.80 × 2,660.64
  4. Step 4: Simplify right side
    5,945.28x = 23,735,037.31
  5. Step 5: Solve for x
    x = 23,735,037.31/5,945.28
  6. Step 6: Final answer
    x = 3,992.25

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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.