Home / 2,113.64-2,922.66-1,821.80

Finding the Fourth Proportional to 2,113.64, 2,922.66 and 1,821.80

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Solution

The fourth proportional to 2,113.64, 2,922.66 and 1,821.80 is: 2,519.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.64 : 2,922.66 = 1,821.80 : x
  2. Step 2: Convert to fraction form
    2,113.64/2,922.66 = 1,821.80/x
  3. Step 3: Cross multiply
    2,113.64x = 2,922.66 × 1,821.80
  4. Step 4: Simplify right side
    2,113.64x = 5,324,501.99
  5. Step 5: Solve for x
    x = 5,324,501.99/2,113.64
  6. Step 6: Final answer
    x = 2,519.11

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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.