Home / 2,578.07-3,557.73-1,399.14

Finding the Fourth Proportional to 2,578.07, 3,557.73 and 1,399.14

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Solution

The fourth proportional to 2,578.07, 3,557.73 and 1,399.14 is: 1,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.07 : 3,557.73 = 1,399.14 : x
  2. Step 2: Convert to fraction form
    2,578.07/3,557.73 = 1,399.14/x
  3. Step 3: Cross multiply
    2,578.07x = 3,557.73 × 1,399.14
  4. Step 4: Simplify right side
    2,578.07x = 4,977,737.57
  5. Step 5: Solve for x
    x = 4,977,737.57/2,578.07
  6. Step 6: Final answer
    x = 1,930.80

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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.