Home / 7,122.72-10,685.61-2,192.25

Finding the Fourth Proportional to 7,122.72, 10,685.61 and 2,192.25

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Solution

The fourth proportional to 7,122.72, 10,685.61 and 2,192.25 is: 3,288.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.72 : 10,685.61 = 2,192.25 : x
  2. Step 2: Convert to fraction form
    7,122.72/10,685.61 = 2,192.25/x
  3. Step 3: Cross multiply
    7,122.72x = 10,685.61 × 2,192.25
  4. Step 4: Simplify right side
    7,122.72x = 23,425,528.52
  5. Step 5: Solve for x
    x = 23,425,528.52/7,122.72
  6. Step 6: Final answer
    x = 3,288.85

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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.