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Finding the Fourth Proportional to 3,258.09, 4,887.12 and 792.90

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Solution

The fourth proportional to 3,258.09, 4,887.12 and 792.90 is: 1,189.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258.09 : 4,887.12 = 792.90 : x
  2. Step 2: Convert to fraction form
    3,258.09/4,887.12 = 792.90/x
  3. Step 3: Cross multiply
    3,258.09x = 4,887.12 × 792.90
  4. Step 4: Simplify right side
    3,258.09x = 3,874,997.45
  5. Step 5: Solve for x
    x = 3,874,997.45/3,258.09
  6. Step 6: Final answer
    x = 1,189.35

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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.