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Finding the Third Proportional to 920.19 and 1,971.88

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Solution

The third proportional to 920.19 and 1,971.88 is: 4,225.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.19 : 1,971.88 = 1,971.88 : x
  2. Step 2: Convert to fraction form
    920.19/1,971.88 = 1,971.88/x
  3. Step 3: Cross multiply
    920.19x = 1,971.88 × 1,971.88
  4. Step 4: Simplify right side
    920.19x = 3,888,291.02
  5. Step 5: Solve for x
    x = 3,888,291.02/920.19
  6. Step 6: Final answer
    x = 4,225.54

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.