Home / 3,639.24-5,022.36-3,428.64

Finding the Fourth Proportional to 3,639.24, 5,022.36 and 3,428.64

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Solution

The fourth proportional to 3,639.24, 5,022.36 and 3,428.64 is: 4,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.24 : 5,022.36 = 3,428.64 : x
  2. Step 2: Convert to fraction form
    3,639.24/5,022.36 = 3,428.64/x
  3. Step 3: Cross multiply
    3,639.24x = 5,022.36 × 3,428.64
  4. Step 4: Simplify right side
    3,639.24x = 17,219,864.39
  5. Step 5: Solve for x
    x = 17,219,864.39/3,639.24
  6. Step 6: Final answer
    x = 4,731.72

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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.