Home / 2,578.88-3,558.86-1,399.93

Finding the Fourth Proportional to 2,578.88, 3,558.86 and 1,399.93

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Solution

The fourth proportional to 2,578.88, 3,558.86 and 1,399.93 is: 1,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.88 : 3,558.86 = 1,399.93 : x
  2. Step 2: Convert to fraction form
    2,578.88/3,558.86 = 1,399.93/x
  3. Step 3: Cross multiply
    2,578.88x = 3,558.86 × 1,399.93
  4. Step 4: Simplify right side
    2,578.88x = 4,982,149.48
  5. Step 5: Solve for x
    x = 4,982,149.48/2,578.88
  6. Step 6: Final answer
    x = 1,931.90

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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.