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Finding the Fourth Proportional to 7,165.67, 10,746.68 and 2,780.73

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Solution

The fourth proportional to 7,165.67, 10,746.68 and 2,780.73 is: 4,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,165.67 : 10,746.68 = 2,780.73 : x
  2. Step 2: Convert to fraction form
    7,165.67/10,746.68 = 2,780.73/x
  3. Step 3: Cross multiply
    7,165.67x = 10,746.68 × 2,780.73
  4. Step 4: Simplify right side
    7,165.67x = 29,883,601.57
  5. Step 5: Solve for x
    x = 29,883,601.57/7,165.67
  6. Step 6: Final answer
    x = 4,170.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.