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Finding the Fourth Proportional to 1,928.43, 2,892.28 and 940.25

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Solution

The fourth proportional to 1,928.43, 2,892.28 and 940.25 is: 1,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.43 : 2,892.28 = 940.25 : x
  2. Step 2: Convert to fraction form
    1,928.43/2,892.28 = 940.25/x
  3. Step 3: Cross multiply
    1,928.43x = 2,892.28 × 940.25
  4. Step 4: Simplify right side
    1,928.43x = 2,719,481.86
  5. Step 5: Solve for x
    x = 2,719,481.86/1,928.43
  6. Step 6: Final answer
    x = 1,410.20

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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.