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Finding the Fourth Proportional to 7,190.80, 10,791.12 and 2,510.81

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Solution

The fourth proportional to 7,190.80, 10,791.12 and 2,510.81 is: 3,767.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.80 : 10,791.12 = 2,510.81 : x
  2. Step 2: Convert to fraction form
    7,190.80/10,791.12 = 2,510.81/x
  3. Step 3: Cross multiply
    7,190.80x = 10,791.12 × 2,510.81
  4. Step 4: Simplify right side
    7,190.80x = 27,094,398.05
  5. Step 5: Solve for x
    x = 27,094,398.05/7,190.80
  6. Step 6: Final answer
    x = 3,767.93

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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.