Home / 7,212.28-10,813.92-3,311.68

Finding the Fourth Proportional to 7,212.28, 10,813.92 and 3,311.68

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Solution

The fourth proportional to 7,212.28, 10,813.92 and 3,311.68 is: 4,965.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.28 : 10,813.92 = 3,311.68 : x
  2. Step 2: Convert to fraction form
    7,212.28/10,813.92 = 3,311.68/x
  3. Step 3: Cross multiply
    7,212.28x = 10,813.92 × 3,311.68
  4. Step 4: Simplify right side
    7,212.28x = 35,812,242.59
  5. Step 5: Solve for x
    x = 35,812,242.59/7,212.28
  6. Step 6: Final answer
    x = 4,965.45

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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.