Home / 1,101.09-1,519.27-747.28

Finding the Fourth Proportional to 1,101.09, 1,519.27 and 747.28

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Solution

The fourth proportional to 1,101.09, 1,519.27 and 747.28 is: 1,031.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.09 : 1,519.27 = 747.28 : x
  2. Step 2: Convert to fraction form
    1,101.09/1,519.27 = 747.28/x
  3. Step 3: Cross multiply
    1,101.09x = 1,519.27 × 747.28
  4. Step 4: Simplify right side
    1,101.09x = 1,135,320.09
  5. Step 5: Solve for x
    x = 1,135,320.09/1,101.09
  6. Step 6: Final answer
    x = 1,031.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.