Home / 3,608.89-4,974.82-2,821.57

Finding the Fourth Proportional to 3,608.89, 4,974.82 and 2,821.57

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Solution

The fourth proportional to 3,608.89, 4,974.82 and 2,821.57 is: 3,889.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.89 : 4,974.82 = 2,821.57 : x
  2. Step 2: Convert to fraction form
    3,608.89/4,974.82 = 2,821.57/x
  3. Step 3: Cross multiply
    3,608.89x = 4,974.82 × 2,821.57
  4. Step 4: Simplify right side
    3,608.89x = 14,036,802.87
  5. Step 5: Solve for x
    x = 14,036,802.87/3,608.89
  6. Step 6: Final answer
    x = 3,889.51

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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.