Home / 1,868.22-2,578.08-1,028.94

Finding the Fourth Proportional to 1,868.22, 2,578.08 and 1,028.94

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Solution

The fourth proportional to 1,868.22, 2,578.08 and 1,028.94 is: 1,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.22 : 2,578.08 = 1,028.94 : x
  2. Step 2: Convert to fraction form
    1,868.22/2,578.08 = 1,028.94/x
  3. Step 3: Cross multiply
    1,868.22x = 2,578.08 × 1,028.94
  4. Step 4: Simplify right side
    1,868.22x = 2,652,689.64
  5. Step 5: Solve for x
    x = 2,652,689.64/1,868.22
  6. Step 6: Final answer
    x = 1,419.90

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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.