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Finding the Third Proportional to 7,748 and 11,948

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Solution

The third proportional to 7,748 and 11,948 is: 18,424.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,748 : 11,948 = 11,948 : x
  2. Step 2: Convert to fraction form
    7,748/11,948 = 11,948/x
  3. Step 3: Cross multiply
    7,748x = 11,948 × 11,948
  4. Step 4: Simplify right side
    7,748x = 142,754,704
  5. Step 5: Solve for x
    x = 142,754,704/7,748
  6. Step 6: Final answer
    x = 18,424.72

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.