Home / 3,429.51-5,129.61-2,863.20

Finding the Fourth Proportional to 3,429.51, 5,129.61 and 2,863.20

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Solution

The fourth proportional to 3,429.51, 5,129.61 and 2,863.20 is: 4,282.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.51 : 5,129.61 = 2,863.20 : x
  2. Step 2: Convert to fraction form
    3,429.51/5,129.61 = 2,863.20/x
  3. Step 3: Cross multiply
    3,429.51x = 5,129.61 × 2,863.20
  4. Step 4: Simplify right side
    3,429.51x = 14,687,099.35
  5. Step 5: Solve for x
    x = 14,687,099.35/3,429.51
  6. Step 6: Final answer
    x = 4,282.56

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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.