Home / 2,569.85-3,546.41-1,390.94

Finding the Fourth Proportional to 2,569.85, 3,546.41 and 1,390.94

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Solution

The fourth proportional to 2,569.85, 3,546.41 and 1,390.94 is: 1,919.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,569.85 : 3,546.41 = 1,390.94 : x
  2. Step 2: Convert to fraction form
    2,569.85/3,546.41 = 1,390.94/x
  3. Step 3: Cross multiply
    2,569.85x = 3,546.41 × 1,390.94
  4. Step 4: Simplify right side
    2,569.85x = 4,932,843.53
  5. Step 5: Solve for x
    x = 4,932,843.53/2,569.85
  6. Step 6: Final answer
    x = 1,919.51

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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.