Home / 2,578.36-3,558.13-1,399.43

Finding the Fourth Proportional to 2,578.36, 3,558.13 and 1,399.43

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Solution

The fourth proportional to 2,578.36, 3,558.13 and 1,399.43 is: 1,931.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.36 : 3,558.13 = 1,399.43 : x
  2. Step 2: Convert to fraction form
    2,578.36/3,558.13 = 1,399.43/x
  3. Step 3: Cross multiply
    2,578.36x = 3,558.13 × 1,399.43
  4. Step 4: Simplify right side
    2,578.36x = 4,979,342.67
  5. Step 5: Solve for x
    x = 4,979,342.67/2,578.36
  6. Step 6: Final answer
    x = 1,931.21

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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.