Home / 3,965.12-5,455.80-3,254.36

Finding the Fourth Proportional to 3,965.12, 5,455.80 and 3,254.36

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Solution

The fourth proportional to 3,965.12, 5,455.80 and 3,254.36 is: 4,477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.12 : 5,455.80 = 3,254.36 : x
  2. Step 2: Convert to fraction form
    3,965.12/5,455.80 = 3,254.36/x
  3. Step 3: Cross multiply
    3,965.12x = 5,455.80 × 3,254.36
  4. Step 4: Simplify right side
    3,965.12x = 17,755,137.29
  5. Step 5: Solve for x
    x = 17,755,137.29/3,965.12
  6. Step 6: Final answer
    x = 4,477.83

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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.