Home / 2,137.14-2,948.20-1,391.54

Finding the Fourth Proportional to 2,137.14, 2,948.20 and 1,391.54

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Solution

The fourth proportional to 2,137.14, 2,948.20 and 1,391.54 is: 1,919.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.14 : 2,948.20 = 1,391.54 : x
  2. Step 2: Convert to fraction form
    2,137.14/2,948.20 = 1,391.54/x
  3. Step 3: Cross multiply
    2,137.14x = 2,948.20 × 1,391.54
  4. Step 4: Simplify right side
    2,137.14x = 4,102,520.01
  5. Step 5: Solve for x
    x = 4,102,520.01/2,137.14
  6. Step 6: Final answer
    x = 1,919.63

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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.