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Finding the Third Proportional to 1,889.16 and 2,778.05

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Solution

The third proportional to 1,889.16 and 2,778.05 is: 4,085.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.16 : 2,778.05 = 2,778.05 : x
  2. Step 2: Convert to fraction form
    1,889.16/2,778.05 = 2,778.05/x
  3. Step 3: Cross multiply
    1,889.16x = 2,778.05 × 2,778.05
  4. Step 4: Simplify right side
    1,889.16x = 7,717,544.44
  5. Step 5: Solve for x
    x = 7,717,544.44/1,889.16
  6. Step 6: Final answer
    x = 4,085.18

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.