Home / 2,031.09-3,044.55-781.35

Finding the Fourth Proportional to 2,031.09, 3,044.55 and 781.35

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Solution

The fourth proportional to 2,031.09, 3,044.55 and 781.35 is: 1,171.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.09 : 3,044.55 = 781.35 : x
  2. Step 2: Convert to fraction form
    2,031.09/3,044.55 = 781.35/x
  3. Step 3: Cross multiply
    2,031.09x = 3,044.55 × 781.35
  4. Step 4: Simplify right side
    2,031.09x = 2,378,859.14
  5. Step 5: Solve for x
    x = 2,378,859.14/2,031.09
  6. Step 6: Final answer
    x = 1,171.22

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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.