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Finding the Third Proportional to 1,928.91 and 4,158.19

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Solution

The third proportional to 1,928.91 and 4,158.19 is: 8,963.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.91 : 4,158.19 = 4,158.19 : x
  2. Step 2: Convert to fraction form
    1,928.91/4,158.19 = 4,158.19/x
  3. Step 3: Cross multiply
    1,928.91x = 4,158.19 × 4,158.19
  4. Step 4: Simplify right side
    1,928.91x = 17,290,523.29
  5. Step 5: Solve for x
    x = 17,290,523.29/1,928.91
  6. Step 6: Final answer
    x = 8,963.90

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.