Home / 3,188.14-4,781.55-1,240.30

Finding the Fourth Proportional to 3,188.14, 4,781.55 and 1,240.30

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Solution

The fourth proportional to 3,188.14, 4,781.55 and 1,240.30 is: 1,860.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.14 : 4,781.55 = 1,240.30 : x
  2. Step 2: Convert to fraction form
    3,188.14/4,781.55 = 1,240.30/x
  3. Step 3: Cross multiply
    3,188.14x = 4,781.55 × 1,240.30
  4. Step 4: Simplify right side
    3,188.14x = 5,930,556.47
  5. Step 5: Solve for x
    x = 5,930,556.47/3,188.14
  6. Step 6: Final answer
    x = 1,860.19

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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.