Home / 6,639.28-9,161.68-3,806.62

Finding the Fourth Proportional to 6,639.28, 9,161.68 and 3,806.62

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Solution

The fourth proportional to 6,639.28, 9,161.68 and 3,806.62 is: 5,252.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.28 : 9,161.68 = 3,806.62 : x
  2. Step 2: Convert to fraction form
    6,639.28/9,161.68 = 3,806.62/x
  3. Step 3: Cross multiply
    6,639.28x = 9,161.68 × 3,806.62
  4. Step 4: Simplify right side
    6,639.28x = 34,875,034.32
  5. Step 5: Solve for x
    x = 34,875,034.32/6,639.28
  6. Step 6: Final answer
    x = 5,252.83

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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.