Home / 1,921.41-2,651.50-1,082.11

Finding the Fourth Proportional to 1,921.41, 2,651.50 and 1,082.11

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Solution

The fourth proportional to 1,921.41, 2,651.50 and 1,082.11 is: 1,493.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.41 : 2,651.50 = 1,082.11 : x
  2. Step 2: Convert to fraction form
    1,921.41/2,651.50 = 1,082.11/x
  3. Step 3: Cross multiply
    1,921.41x = 2,651.50 × 1,082.11
  4. Step 4: Simplify right side
    1,921.41x = 2,869,214.67
  5. Step 5: Solve for x
    x = 2,869,214.67/1,921.41
  6. Step 6: Final answer
    x = 1,493.29

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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.