Home / 3,608.12-5,412.30-1,299.80

Finding the Fourth Proportional to 3,608.12, 5,412.30 and 1,299.80

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Solution

The fourth proportional to 3,608.12, 5,412.30 and 1,299.80 is: 1,949.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.12 : 5,412.30 = 1,299.80 : x
  2. Step 2: Convert to fraction form
    3,608.12/5,412.30 = 1,299.80/x
  3. Step 3: Cross multiply
    3,608.12x = 5,412.30 × 1,299.80
  4. Step 4: Simplify right side
    3,608.12x = 7,034,907.54
  5. Step 5: Solve for x
    x = 7,034,907.54/3,608.12
  6. Step 6: Final answer
    x = 1,949.74

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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.