Home / 2,091.13-3,136.69-630.28

Finding the Fourth Proportional to 2,091.13, 3,136.69 and 630.28

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Solution

The fourth proportional to 2,091.13, 3,136.69 and 630.28 is: 945.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.13 : 3,136.69 = 630.28 : x
  2. Step 2: Convert to fraction form
    2,091.13/3,136.69 = 630.28/x
  3. Step 3: Cross multiply
    2,091.13x = 3,136.69 × 630.28
  4. Step 4: Simplify right side
    2,091.13x = 1,976,992.97
  5. Step 5: Solve for x
    x = 1,976,992.97/2,091.13
  6. Step 6: Final answer
    x = 945.42

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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.