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Finding the Third Proportional to 887.88 and 1,378.63

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Solution

The third proportional to 887.88 and 1,378.63 is: 2,140.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.88 : 1,378.63 = 1,378.63 : x
  2. Step 2: Convert to fraction form
    887.88/1,378.63 = 1,378.63/x
  3. Step 3: Cross multiply
    887.88x = 1,378.63 × 1,378.63
  4. Step 4: Simplify right side
    887.88x = 1,900,606.89
  5. Step 5: Solve for x
    x = 1,900,606.89/887.88
  6. Step 6: Final answer
    x = 2,140.62

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.