Home / 5,212.31-7,192.99-2,822.30

Finding the Fourth Proportional to 5,212.31, 7,192.99 and 2,822.30

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Solution

The fourth proportional to 5,212.31, 7,192.99 and 2,822.30 is: 3,894.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.31 : 7,192.99 = 2,822.30 : x
  2. Step 2: Convert to fraction form
    5,212.31/7,192.99 = 2,822.30/x
  3. Step 3: Cross multiply
    5,212.31x = 7,192.99 × 2,822.30
  4. Step 4: Simplify right side
    5,212.31x = 20,300,775.68
  5. Step 5: Solve for x
    x = 20,300,775.68/5,212.31
  6. Step 6: Final answer
    x = 3,894.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.