Home / 2,091.20-3,137.07-630.50

Finding the Fourth Proportional to 2,091.20, 3,137.07 and 630.50

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Solution

The fourth proportional to 2,091.20, 3,137.07 and 630.50 is: 945.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.20 : 3,137.07 = 630.50 : x
  2. Step 2: Convert to fraction form
    2,091.20/3,137.07 = 630.50/x
  3. Step 3: Cross multiply
    2,091.20x = 3,137.07 × 630.50
  4. Step 4: Simplify right side
    2,091.20x = 1,977,906.95
  5. Step 5: Solve for x
    x = 1,977,906.95/2,091.20
  6. Step 6: Final answer
    x = 945.83

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1.5x scale

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.