Home / 2,127.68-3,189.84-1,031.75

Finding the Fourth Proportional to 2,127.68, 3,189.84 and 1,031.75

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Solution

The fourth proportional to 2,127.68, 3,189.84 and 1,031.75 is: 1,546.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.68 : 3,189.84 = 1,031.75 : x
  2. Step 2: Convert to fraction form
    2,127.68/3,189.84 = 1,031.75/x
  3. Step 3: Cross multiply
    2,127.68x = 3,189.84 × 1,031.75
  4. Step 4: Simplify right side
    2,127.68x = 3,291,101.47
  5. Step 5: Solve for x
    x = 3,291,101.47/2,127.68
  6. Step 6: Final answer
    x = 1,546.81

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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.