Home / 1,868.42-2,578.50-1,122.44

Finding the Fourth Proportional to 1,868.42, 2,578.50 and 1,122.44

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Solution

The fourth proportional to 1,868.42, 2,578.50 and 1,122.44 is: 1,549.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.42 : 2,578.50 = 1,122.44 : x
  2. Step 2: Convert to fraction form
    1,868.42/2,578.50 = 1,122.44/x
  3. Step 3: Cross multiply
    1,868.42x = 2,578.50 × 1,122.44
  4. Step 4: Simplify right side
    1,868.42x = 2,894,211.54
  5. Step 5: Solve for x
    x = 2,894,211.54/1,868.42
  6. Step 6: Final answer
    x = 1,549.02

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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.