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Finding the Third Proportional to 8,781.75 and 19,210.50

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Solution

The third proportional to 8,781.75 and 19,210.50 is: 42,023.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.75 : 19,210.50 = 19,210.50 : x
  2. Step 2: Convert to fraction form
    8,781.75/19,210.50 = 19,210.50/x
  3. Step 3: Cross multiply
    8,781.75x = 19,210.50 × 19,210.50
  4. Step 4: Simplify right side
    8,781.75x = 369,043,310.25
  5. Step 5: Solve for x
    x = 369,043,310.25/8,781.75
  6. Step 6: Final answer
    x = 42,023.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.