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Finding the Third Proportional to 5,377.50 and 9,681.75

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Solution

The third proportional to 5,377.50 and 9,681.75 is: 17,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.50 : 9,681.75 = 9,681.75 : x
  2. Step 2: Convert to fraction form
    5,377.50/9,681.75 = 9,681.75/x
  3. Step 3: Cross multiply
    5,377.50x = 9,681.75 × 9,681.75
  4. Step 4: Simplify right side
    5,377.50x = 93,736,283.06
  5. Step 5: Solve for x
    x = 93,736,283.06/5,377.50
  6. Step 6: Final answer
    x = 17,431.20

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Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.