Home / 3,910.75-5,399.33-3,490.36

Finding the Fourth Proportional to 3,910.75, 5,399.33 and 3,490.36

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Solution

The fourth proportional to 3,910.75, 5,399.33 and 3,490.36 is: 4,818.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.75 : 5,399.33 = 3,490.36 : x
  2. Step 2: Convert to fraction form
    3,910.75/5,399.33 = 3,490.36/x
  3. Step 3: Cross multiply
    3,910.75x = 5,399.33 × 3,490.36
  4. Step 4: Simplify right side
    3,910.75x = 18,845,574.51
  5. Step 5: Solve for x
    x = 18,845,574.51/3,910.75
  6. Step 6: Final answer
    x = 4,818.92

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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.