Home / 1,922.12-2,651.69-1,213.41

Finding the Fourth Proportional to 1,922.12, 2,651.69 and 1,213.41

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Solution

The fourth proportional to 1,922.12, 2,651.69 and 1,213.41 is: 1,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922.12 : 2,651.69 = 1,213.41 : x
  2. Step 2: Convert to fraction form
    1,922.12/2,651.69 = 1,213.41/x
  3. Step 3: Cross multiply
    1,922.12x = 2,651.69 × 1,213.41
  4. Step 4: Simplify right side
    1,922.12x = 3,217,581.10
  5. Step 5: Solve for x
    x = 3,217,581.10/1,922.12
  6. Step 6: Final answer
    x = 1,673.98

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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.