Home / 2,117.26-2,922.10-1,278.44

Finding the Fourth Proportional to 2,117.26, 2,922.10 and 1,278.44

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Solution

The fourth proportional to 2,117.26, 2,922.10 and 1,278.44 is: 1,764.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.26 : 2,922.10 = 1,278.44 : x
  2. Step 2: Convert to fraction form
    2,117.26/2,922.10 = 1,278.44/x
  3. Step 3: Cross multiply
    2,117.26x = 2,922.10 × 1,278.44
  4. Step 4: Simplify right side
    2,117.26x = 3,735,729.52
  5. Step 5: Solve for x
    x = 3,735,729.52/2,117.26
  6. Step 6: Final answer
    x = 1,764.42

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1.5x scale

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.