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Finding the Fourth Proportional to 2,641.19, 3,961.64 and 792.32

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Solution

The fourth proportional to 2,641.19, 3,961.64 and 792.32 is: 1,188.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641.19 : 3,961.64 = 792.32 : x
  2. Step 2: Convert to fraction form
    2,641.19/3,961.64 = 792.32/x
  3. Step 3: Cross multiply
    2,641.19x = 3,961.64 × 792.32
  4. Step 4: Simplify right side
    2,641.19x = 3,138,868.78
  5. Step 5: Solve for x
    x = 3,138,868.78/2,641.19
  6. Step 6: Final answer
    x = 1,188.43

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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.