Home / 2,578.06-3,557.74-1,399.13

Finding the Fourth Proportional to 2,578.06, 3,557.74 and 1,399.13

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Solution

The fourth proportional to 2,578.06, 3,557.74 and 1,399.13 is: 1,930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.06 : 3,557.74 = 1,399.13 : x
  2. Step 2: Convert to fraction form
    2,578.06/3,557.74 = 1,399.13/x
  3. Step 3: Cross multiply
    2,578.06x = 3,557.74 × 1,399.13
  4. Step 4: Simplify right side
    2,578.06x = 4,977,735.44
  5. Step 5: Solve for x
    x = 4,977,735.44/2,578.06
  6. Step 6: Final answer
    x = 1,930.81

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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.