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Finding the Fourth Proportional to 7,173.76, 10,761.46 and 1,908.99

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Solution

The fourth proportional to 7,173.76, 10,761.46 and 1,908.99 is: 2,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.76 : 10,761.46 = 1,908.99 : x
  2. Step 2: Convert to fraction form
    7,173.76/10,761.46 = 1,908.99/x
  3. Step 3: Cross multiply
    7,173.76x = 10,761.46 × 1,908.99
  4. Step 4: Simplify right side
    7,173.76x = 20,543,519.53
  5. Step 5: Solve for x
    x = 20,543,519.53/7,173.76
  6. Step 6: Final answer
    x = 2,863.70

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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.