Home / 3,148.87-4,717.85-1,913.69

Finding the Fourth Proportional to 3,148.87, 4,717.85 and 1,913.69

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Solution

The fourth proportional to 3,148.87, 4,717.85 and 1,913.69 is: 2,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.87 : 4,717.85 = 1,913.69 : x
  2. Step 2: Convert to fraction form
    3,148.87/4,717.85 = 1,913.69/x
  3. Step 3: Cross multiply
    3,148.87x = 4,717.85 × 1,913.69
  4. Step 4: Simplify right side
    3,148.87x = 9,028,469.21
  5. Step 5: Solve for x
    x = 9,028,469.21/3,148.87
  6. Step 6: Final answer
    x = 2,867.21

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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.