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Finding the Third Proportional to 4,036.08 and 8,690.10

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Solution

The third proportional to 4,036.08 and 8,690.10 is: 18,710.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,036.08 : 8,690.10 = 8,690.10 : x
  2. Step 2: Convert to fraction form
    4,036.08/8,690.10 = 8,690.10/x
  3. Step 3: Cross multiply
    4,036.08x = 8,690.10 × 8,690.10
  4. Step 4: Simplify right side
    4,036.08x = 75,517,797.28
  5. Step 5: Solve for x
    x = 75,517,797.28/4,036.08
  6. Step 6: Final answer
    x = 18,710.69

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.