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Finding the Third Proportional to 7,155 and 9,669.75

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Solution

The third proportional to 7,155 and 9,669.75 is: 13,068.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155 : 9,669.75 = 9,669.75 : x
  2. Step 2: Convert to fraction form
    7,155/9,669.75 = 9,669.75/x
  3. Step 3: Cross multiply
    7,155x = 9,669.75 × 9,669.75
  4. Step 4: Simplify right side
    7,155x = 93,504,065.06
  5. Step 5: Solve for x
    x = 93,504,065.06/7,155
  6. Step 6: Final answer
    x = 13,068.35

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.