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Finding the Fourth Proportional to 7,080.45, 10,620.67 and 2,082.82

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Solution

The fourth proportional to 7,080.45, 10,620.67 and 2,082.82 is: 3,124.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,080.45 : 10,620.67 = 2,082.82 : x
  2. Step 2: Convert to fraction form
    7,080.45/10,620.67 = 2,082.82/x
  3. Step 3: Cross multiply
    7,080.45x = 10,620.67 × 2,082.82
  4. Step 4: Simplify right side
    7,080.45x = 22,120,943.89
  5. Step 5: Solve for x
    x = 22,120,943.89/7,080.45
  6. Step 6: Final answer
    x = 3,124.23

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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.