Home / 1,868.36-2,578.38-1,082.34

Finding the Fourth Proportional to 1,868.36, 2,578.38 and 1,082.34

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Solution

The fourth proportional to 1,868.36, 2,578.38 and 1,082.34 is: 1,493.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.36 : 2,578.38 = 1,082.34 : x
  2. Step 2: Convert to fraction form
    1,868.36/2,578.38 = 1,082.34/x
  3. Step 3: Cross multiply
    1,868.36x = 2,578.38 × 1,082.34
  4. Step 4: Simplify right side
    1,868.36x = 2,790,683.81
  5. Step 5: Solve for x
    x = 2,790,683.81/1,868.36
  6. Step 6: Final answer
    x = 1,493.66

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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.