Home / 2,105.30-3,148.68-1,551.80

Finding the Fourth Proportional to 2,105.30, 3,148.68 and 1,551.80

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Solution

The fourth proportional to 2,105.30, 3,148.68 and 1,551.80 is: 2,320.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105.30 : 3,148.68 = 1,551.80 : x
  2. Step 2: Convert to fraction form
    2,105.30/3,148.68 = 1,551.80/x
  3. Step 3: Cross multiply
    2,105.30x = 3,148.68 × 1,551.80
  4. Step 4: Simplify right side
    2,105.30x = 4,886,121.62
  5. Step 5: Solve for x
    x = 4,886,121.62/2,105.30
  6. Step 6: Final answer
    x = 2,320.87

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1.5x scale

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.