Home / 7,149.12-10,722.06-2,151.60

Finding the Fourth Proportional to 7,149.12, 10,722.06 and 2,151.60

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Solution

The fourth proportional to 7,149.12, 10,722.06 and 2,151.60 is: 3,226.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.12 : 10,722.06 = 2,151.60 : x
  2. Step 2: Convert to fraction form
    7,149.12/10,722.06 = 2,151.60/x
  3. Step 3: Cross multiply
    7,149.12x = 10,722.06 × 2,151.60
  4. Step 4: Simplify right side
    7,149.12x = 23,069,584.30
  5. Step 5: Solve for x
    x = 23,069,584.30/7,149.12
  6. Step 6: Final answer
    x = 3,226.91

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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.