Home / 3,928.87-5,423.10-2,516.36

Finding the Fourth Proportional to 3,928.87, 5,423.10 and 2,516.36

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Solution

The fourth proportional to 3,928.87, 5,423.10 and 2,516.36 is: 3,473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.87 : 5,423.10 = 2,516.36 : x
  2. Step 2: Convert to fraction form
    3,928.87/5,423.10 = 2,516.36/x
  3. Step 3: Cross multiply
    3,928.87x = 5,423.10 × 2,516.36
  4. Step 4: Simplify right side
    3,928.87x = 13,646,471.92
  5. Step 5: Solve for x
    x = 13,646,471.92/3,928.87
  6. Step 6: Final answer
    x = 3,473.38

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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.