Home / 2,091.10-3,135.69-629.95

Finding the Fourth Proportional to 2,091.10, 3,135.69 and 629.95

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Solution

The fourth proportional to 2,091.10, 3,135.69 and 629.95 is: 944.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.10 : 3,135.69 = 629.95 : x
  2. Step 2: Convert to fraction form
    2,091.10/3,135.69 = 629.95/x
  3. Step 3: Cross multiply
    2,091.10x = 3,135.69 × 629.95
  4. Step 4: Simplify right side
    2,091.10x = 1,975,327.92
  5. Step 5: Solve for x
    x = 1,975,327.92/2,091.10
  6. Step 6: Final answer
    x = 944.64

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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.