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Finding the Third Proportional to 1,985.50 and 4,491

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Solution

The third proportional to 1,985.50 and 4,491 is: 10,158.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.50 : 4,491 = 4,491 : x
  2. Step 2: Convert to fraction form
    1,985.50/4,491 = 4,491/x
  3. Step 3: Cross multiply
    1,985.50x = 4,491 × 4,491
  4. Step 4: Simplify right side
    1,985.50x = 20,169,081
  5. Step 5: Solve for x
    x = 20,169,081/1,985.50
  6. Step 6: Final answer
    x = 10,158.19

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Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.