Home / 2,110.75-3,166.11-649.90

Finding the Fourth Proportional to 2,110.75, 3,166.11 and 649.90

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Solution

The fourth proportional to 2,110.75, 3,166.11 and 649.90 is: 974.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.75 : 3,166.11 = 649.90 : x
  2. Step 2: Convert to fraction form
    2,110.75/3,166.11 = 649.90/x
  3. Step 3: Cross multiply
    2,110.75x = 3,166.11 × 649.90
  4. Step 4: Simplify right side
    2,110.75x = 2,057,654.89
  5. Step 5: Solve for x
    x = 2,057,654.89/2,110.75
  6. Step 6: Final answer
    x = 974.85

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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.