Home / 3,407.08-5,105.70-2,107.80

Finding the Fourth Proportional to 3,407.08, 5,105.70 and 2,107.80

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Solution

The fourth proportional to 3,407.08, 5,105.70 and 2,107.80 is: 3,158.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.08 : 5,105.70 = 2,107.80 : x
  2. Step 2: Convert to fraction form
    3,407.08/5,105.70 = 2,107.80/x
  3. Step 3: Cross multiply
    3,407.08x = 5,105.70 × 2,107.80
  4. Step 4: Simplify right side
    3,407.08x = 10,761,794.46
  5. Step 5: Solve for x
    x = 10,761,794.46/3,407.08
  6. Step 6: Final answer
    x = 3,158.66

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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.