Home / 2,161.92-2,983.68-1,230.72

Finding the Fourth Proportional to 2,161.92, 2,983.68 and 1,230.72

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Solution

The fourth proportional to 2,161.92, 2,983.68 and 1,230.72 is: 1,698.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.92 : 2,983.68 = 1,230.72 : x
  2. Step 2: Convert to fraction form
    2,161.92/2,983.68 = 1,230.72/x
  3. Step 3: Cross multiply
    2,161.92x = 2,983.68 × 1,230.72
  4. Step 4: Simplify right side
    2,161.92x = 3,672,074.65
  5. Step 5: Solve for x
    x = 3,672,074.65/2,161.92
  6. Step 6: Final answer
    x = 1,698.52

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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.