Home / 3,511.72-5,270.82-1,781.56

Finding the Fourth Proportional to 3,511.72, 5,270.82 and 1,781.56

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Solution

The fourth proportional to 3,511.72, 5,270.82 and 1,781.56 is: 2,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.72 : 5,270.82 = 1,781.56 : x
  2. Step 2: Convert to fraction form
    3,511.72/5,270.82 = 1,781.56/x
  3. Step 3: Cross multiply
    3,511.72x = 5,270.82 × 1,781.56
  4. Step 4: Simplify right side
    3,511.72x = 9,390,282.08
  5. Step 5: Solve for x
    x = 9,390,282.08/3,511.72
  6. Step 6: Final answer
    x = 2,673.98

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1.5x scale

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.