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Finding the Fourth Proportional to 2,873.60, 4,310.29 and 925.75

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Solution

The fourth proportional to 2,873.60, 4,310.29 and 925.75 is: 1,388.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,873.60 : 4,310.29 = 925.75 : x
  2. Step 2: Convert to fraction form
    2,873.60/4,310.29 = 925.75/x
  3. Step 3: Cross multiply
    2,873.60x = 4,310.29 × 925.75
  4. Step 4: Simplify right side
    2,873.60x = 3,990,250.97
  5. Step 5: Solve for x
    x = 3,990,250.97/2,873.60
  6. Step 6: Final answer
    x = 1,388.59

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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.