Home / 2,090.32-3,136.80-791.92

Finding the Fourth Proportional to 2,090.32, 3,136.80 and 791.92

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Solution

The fourth proportional to 2,090.32, 3,136.80 and 791.92 is: 1,188.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.32 : 3,136.80 = 791.92 : x
  2. Step 2: Convert to fraction form
    2,090.32/3,136.80 = 791.92/x
  3. Step 3: Cross multiply
    2,090.32x = 3,136.80 × 791.92
  4. Step 4: Simplify right side
    2,090.32x = 2,484,094.66
  5. Step 5: Solve for x
    x = 2,484,094.66/2,090.32
  6. Step 6: Final answer
    x = 1,188.38

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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.