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Finding the Third Proportional to 1,890 and 4,632

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Solution

The third proportional to 1,890 and 4,632 is: 11,352.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890 : 4,632 = 4,632 : x
  2. Step 2: Convert to fraction form
    1,890/4,632 = 4,632/x
  3. Step 3: Cross multiply
    1,890x = 4,632 × 4,632
  4. Step 4: Simplify right side
    1,890x = 21,455,424
  5. Step 5: Solve for x
    x = 21,455,424/1,890
  6. Step 6: Final answer
    x = 11,352.08

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Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.