Home / 6,639.28-9,162.23-3,806.71

Finding the Fourth Proportional to 6,639.28, 9,162.23 and 3,806.71

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Solution

The fourth proportional to 6,639.28, 9,162.23 and 3,806.71 is: 5,253.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.28 : 9,162.23 = 3,806.71 : x
  2. Step 2: Convert to fraction form
    6,639.28/9,162.23 = 3,806.71/x
  3. Step 3: Cross multiply
    6,639.28x = 9,162.23 × 3,806.71
  4. Step 4: Simplify right side
    6,639.28x = 34,877,910.62
  5. Step 5: Solve for x
    x = 34,877,910.62/6,639.28
  6. Step 6: Final answer
    x = 5,253.27

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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.