Home / 3,910.29-5,866.79-1,720.59

Finding the Fourth Proportional to 3,910.29, 5,866.79 and 1,720.59

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Solution

The fourth proportional to 3,910.29, 5,866.79 and 1,720.59 is: 2,581.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.29 : 5,866.79 = 1,720.59 : x
  2. Step 2: Convert to fraction form
    3,910.29/5,866.79 = 1,720.59/x
  3. Step 3: Cross multiply
    3,910.29x = 5,866.79 × 1,720.59
  4. Step 4: Simplify right side
    3,910.29x = 10,094,331.60
  5. Step 5: Solve for x
    x = 10,094,331.60/3,910.29
  6. Step 6: Final answer
    x = 2,581.48

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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.