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Finding the Fourth Proportional to 7,080.57, 10,620.87 and 2,150.25

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Solution

The fourth proportional to 7,080.57, 10,620.87 and 2,150.25 is: 3,225.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,080.57 : 10,620.87 = 2,150.25 : x
  2. Step 2: Convert to fraction form
    7,080.57/10,620.87 = 2,150.25/x
  3. Step 3: Cross multiply
    7,080.57x = 10,620.87 × 2,150.25
  4. Step 4: Simplify right side
    7,080.57x = 22,837,525.72
  5. Step 5: Solve for x
    x = 22,837,525.72/7,080.57
  6. Step 6: Final answer
    x = 3,225.38

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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.