Home / 2,578.70-3,869.58-1,097.85

Finding the Fourth Proportional to 2,578.70, 3,869.58 and 1,097.85

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Solution

The fourth proportional to 2,578.70, 3,869.58 and 1,097.85 is: 1,647.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.70 : 3,869.58 = 1,097.85 : x
  2. Step 2: Convert to fraction form
    2,578.70/3,869.58 = 1,097.85/x
  3. Step 3: Cross multiply
    2,578.70x = 3,869.58 × 1,097.85
  4. Step 4: Simplify right side
    2,578.70x = 4,248,218.40
  5. Step 5: Solve for x
    x = 4,248,218.40/2,578.70
  6. Step 6: Final answer
    x = 1,647.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.