Home / 7,122.78-10,684.32-2,192.46

Finding the Fourth Proportional to 7,122.78, 10,684.32 and 2,192.46

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Solution

The fourth proportional to 7,122.78, 10,684.32 and 2,192.46 is: 3,288.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.78 : 10,684.32 = 2,192.46 : x
  2. Step 2: Convert to fraction form
    7,122.78/10,684.32 = 2,192.46/x
  3. Step 3: Cross multiply
    7,122.78x = 10,684.32 × 2,192.46
  4. Step 4: Simplify right side
    7,122.78x = 23,424,944.23
  5. Step 5: Solve for x
    x = 23,424,944.23/7,122.78
  6. Step 6: Final answer
    x = 3,288.74

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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.