Home / 1,428.04-1,961.21-1,194.76

Finding the Fourth Proportional to 1,428.04, 1,961.21 and 1,194.76

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Solution

The fourth proportional to 1,428.04, 1,961.21 and 1,194.76 is: 1,640.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.04 : 1,961.21 = 1,194.76 : x
  2. Step 2: Convert to fraction form
    1,428.04/1,961.21 = 1,194.76/x
  3. Step 3: Cross multiply
    1,428.04x = 1,961.21 × 1,194.76
  4. Step 4: Simplify right side
    1,428.04x = 2,343,175.26
  5. Step 5: Solve for x
    x = 2,343,175.26/1,428.04
  6. Step 6: Final answer
    x = 1,640.83

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.