Home / 2,578.53-3,558.38-1,399.61

Finding the Fourth Proportional to 2,578.53, 3,558.38 and 1,399.61

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Solution

The fourth proportional to 2,578.53, 3,558.38 and 1,399.61 is: 1,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.53 : 3,558.38 = 1,399.61 : x
  2. Step 2: Convert to fraction form
    2,578.53/3,558.38 = 1,399.61/x
  3. Step 3: Cross multiply
    2,578.53x = 3,558.38 × 1,399.61
  4. Step 4: Simplify right side
    2,578.53x = 4,980,319.44
  5. Step 5: Solve for x
    x = 4,980,319.44/2,578.53
  6. Step 6: Final answer
    x = 1,931.46

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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.