Home / 3,933.89-5,429.00-2,165.88

Finding the Fourth Proportional to 3,933.89, 5,429.00 and 2,165.88

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Solution

The fourth proportional to 3,933.89, 5,429.00 and 2,165.88 is: 2,989.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.89 : 5,429.00 = 2,165.88 : x
  2. Step 2: Convert to fraction form
    3,933.89/5,429.00 = 2,165.88/x
  3. Step 3: Cross multiply
    3,933.89x = 5,429.00 × 2,165.88
  4. Step 4: Simplify right side
    3,933.89x = 11,758,567.93
  5. Step 5: Solve for x
    x = 11,758,567.93/3,933.89
  6. Step 6: Final answer
    x = 2,989.05

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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.