Home / 3,698.76-5,104.09-2,105.80

Finding the Fourth Proportional to 3,698.76, 5,104.09 and 2,105.80

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Solution

The fourth proportional to 3,698.76, 5,104.09 and 2,105.80 is: 2,905.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,698.76 : 5,104.09 = 2,105.80 : x
  2. Step 2: Convert to fraction form
    3,698.76/5,104.09 = 2,105.80/x
  3. Step 3: Cross multiply
    3,698.76x = 5,104.09 × 2,105.80
  4. Step 4: Simplify right side
    3,698.76x = 10,748,178.45
  5. Step 5: Solve for x
    x = 10,748,178.45/3,698.76
  6. Step 6: Final answer
    x = 2,905.88

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1.5x scale

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.