Home / 5,211.89-7,192.41-2,821.85

Finding the Fourth Proportional to 5,211.89, 7,192.41 and 2,821.85

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Solution

The fourth proportional to 5,211.89, 7,192.41 and 2,821.85 is: 3,894.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.89 : 7,192.41 = 2,821.85 : x
  2. Step 2: Convert to fraction form
    5,211.89/7,192.41 = 2,821.85/x
  3. Step 3: Cross multiply
    5,211.89x = 7,192.41 × 2,821.85
  4. Step 4: Simplify right side
    5,211.89x = 20,295,852.09
  5. Step 5: Solve for x
    x = 20,295,852.09/5,211.89
  6. Step 6: Final answer
    x = 3,894.15

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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.