Home / 2,157.44-2,974.08-1,328

Finding the Fourth Proportional to 2,157.44, 2,974.08 and 1,328

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Solution

The fourth proportional to 2,157.44, 2,974.08 and 1,328 is: 1,830.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.44 : 2,974.08 = 1,328 : x
  2. Step 2: Convert to fraction form
    2,157.44/2,974.08 = 1,328/x
  3. Step 3: Cross multiply
    2,157.44x = 2,974.08 × 1,328
  4. Step 4: Simplify right side
    2,157.44x = 3,949,578.24
  5. Step 5: Solve for x
    x = 3,949,578.24/2,157.44
  6. Step 6: Final answer
    x = 1,830.68

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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.