Home / 2,130.36-3,195.63-743.83

Finding the Fourth Proportional to 2,130.36, 3,195.63 and 743.83

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Solution

The fourth proportional to 2,130.36, 3,195.63 and 743.83 is: 1,115.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.36 : 3,195.63 = 743.83 : x
  2. Step 2: Convert to fraction form
    2,130.36/3,195.63 = 743.83/x
  3. Step 3: Cross multiply
    2,130.36x = 3,195.63 × 743.83
  4. Step 4: Simplify right side
    2,130.36x = 2,377,001.74
  5. Step 5: Solve for x
    x = 2,377,001.74/2,130.36
  6. Step 6: Final answer
    x = 1,115.78

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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.