Home / 3,639.60-5,022-3,141.72

Finding the Fourth Proportional to 3,639.60, 5,022 and 3,141.72

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Solution

The fourth proportional to 3,639.60, 5,022 and 3,141.72 is: 4,335.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.60 : 5,022 = 3,141.72 : x
  2. Step 2: Convert to fraction form
    3,639.60/5,022 = 3,141.72/x
  3. Step 3: Cross multiply
    3,639.60x = 5,022 × 3,141.72
  4. Step 4: Simplify right side
    3,639.60x = 15,777,717.84
  5. Step 5: Solve for x
    x = 15,777,717.84/3,639.60
  6. Step 6: Final answer
    x = 4,335.01

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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.