Home / 1,961.40-2,938.26-1,137.95

Finding the Fourth Proportional to 1,961.40, 2,938.26 and 1,137.95

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Solution

The fourth proportional to 1,961.40, 2,938.26 and 1,137.95 is: 1,704.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.40 : 2,938.26 = 1,137.95 : x
  2. Step 2: Convert to fraction form
    1,961.40/2,938.26 = 1,137.95/x
  3. Step 3: Cross multiply
    1,961.40x = 2,938.26 × 1,137.95
  4. Step 4: Simplify right side
    1,961.40x = 3,343,587.16
  5. Step 5: Solve for x
    x = 3,343,587.16/1,961.40
  6. Step 6: Final answer
    x = 1,704.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.