Home / 2,133.10-3,199.20-671.93

Finding the Fourth Proportional to 2,133.10, 3,199.20 and 671.93

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Solution

The fourth proportional to 2,133.10, 3,199.20 and 671.93 is: 1,007.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.10 : 3,199.20 = 671.93 : x
  2. Step 2: Convert to fraction form
    2,133.10/3,199.20 = 671.93/x
  3. Step 3: Cross multiply
    2,133.10x = 3,199.20 × 671.93
  4. Step 4: Simplify right side
    2,133.10x = 2,149,631.94
  5. Step 5: Solve for x
    x = 2,149,631.94/2,133.10
  6. Step 6: Final answer
    x = 1,007.75

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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.