Home / 2,691.36-3,710.61-1,805.22

Finding the Fourth Proportional to 2,691.36, 3,710.61 and 1,805.22

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Solution

The fourth proportional to 2,691.36, 3,710.61 and 1,805.22 is: 2,488.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.36 : 3,710.61 = 1,805.22 : x
  2. Step 2: Convert to fraction form
    2,691.36/3,710.61 = 1,805.22/x
  3. Step 3: Cross multiply
    2,691.36x = 3,710.61 × 1,805.22
  4. Step 4: Simplify right side
    2,691.36x = 6,698,467.38
  5. Step 5: Solve for x
    x = 6,698,467.38/2,691.36
  6. Step 6: Final answer
    x = 2,488.88

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1.5x scale

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.