Home / 4,639.05-6,399.68-3,378.15

Finding the Fourth Proportional to 4,639.05, 6,399.68 and 3,378.15

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Solution

The fourth proportional to 4,639.05, 6,399.68 and 3,378.15 is: 4,660.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639.05 : 6,399.68 = 3,378.15 : x
  2. Step 2: Convert to fraction form
    4,639.05/6,399.68 = 3,378.15/x
  3. Step 3: Cross multiply
    4,639.05x = 6,399.68 × 3,378.15
  4. Step 4: Simplify right side
    4,639.05x = 21,619,062.10
  5. Step 5: Solve for x
    x = 21,619,062.10/4,639.05
  6. Step 6: Final answer
    x = 4,660.23

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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.