Home / 2,578.70-3,558.49-1,399.75

Finding the Fourth Proportional to 2,578.70, 3,558.49 and 1,399.75

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Solution

The fourth proportional to 2,578.70, 3,558.49 and 1,399.75 is: 1,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.70 : 3,558.49 = 1,399.75 : x
  2. Step 2: Convert to fraction form
    2,578.70/3,558.49 = 1,399.75/x
  3. Step 3: Cross multiply
    2,578.70x = 3,558.49 × 1,399.75
  4. Step 4: Simplify right side
    2,578.70x = 4,980,983.98
  5. Step 5: Solve for x
    x = 4,980,983.98/2,578.70
  6. Step 6: Final answer
    x = 1,931.59

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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.