Home / 3,578.20-5,365.44-1,387.57

Finding the Fourth Proportional to 3,578.20, 5,365.44 and 1,387.57

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Solution

The fourth proportional to 3,578.20, 5,365.44 and 1,387.57 is: 2,080.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.20 : 5,365.44 = 1,387.57 : x
  2. Step 2: Convert to fraction form
    3,578.20/5,365.44 = 1,387.57/x
  3. Step 3: Cross multiply
    3,578.20x = 5,365.44 × 1,387.57
  4. Step 4: Simplify right side
    3,578.20x = 7,444,923.58
  5. Step 5: Solve for x
    x = 7,444,923.58/3,578.20
  6. Step 6: Final answer
    x = 2,080.63

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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.