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Finding the Fourth Proportional to 6,780.70, 10,171.15 and 1,850.74

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Solution

The fourth proportional to 6,780.70, 10,171.15 and 1,850.74 is: 2,776.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.70 : 10,171.15 = 1,850.74 : x
  2. Step 2: Convert to fraction form
    6,780.70/10,171.15 = 1,850.74/x
  3. Step 3: Cross multiply
    6,780.70x = 10,171.15 × 1,850.74
  4. Step 4: Simplify right side
    6,780.70x = 18,824,154.15
  5. Step 5: Solve for x
    x = 18,824,154.15/6,780.70
  6. Step 6: Final answer
    x = 2,776.14

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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.