Home / 2,091.12-3,137.04-630.12

Finding the Fourth Proportional to 2,091.12, 3,137.04 and 630.12

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Solution

The fourth proportional to 2,091.12, 3,137.04 and 630.12 is: 945.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.12 : 3,137.04 = 630.12 : x
  2. Step 2: Convert to fraction form
    2,091.12/3,137.04 = 630.12/x
  3. Step 3: Cross multiply
    2,091.12x = 3,137.04 × 630.12
  4. Step 4: Simplify right side
    2,091.12x = 1,976,711.64
  5. Step 5: Solve for x
    x = 1,976,711.64/2,091.12
  6. Step 6: Final answer
    x = 945.29

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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.