Home / 7,147.45-10,727.71-3,639.88

Finding the Fourth Proportional to 7,147.45, 10,727.71 and 3,639.88

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Solution

The fourth proportional to 7,147.45, 10,727.71 and 3,639.88 is: 5,463.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.45 : 10,727.71 = 3,639.88 : x
  2. Step 2: Convert to fraction form
    7,147.45/10,727.71 = 3,639.88/x
  3. Step 3: Cross multiply
    7,147.45x = 10,727.71 × 3,639.88
  4. Step 4: Simplify right side
    7,147.45x = 39,047,505.24
  5. Step 5: Solve for x
    x = 39,047,505.24/7,147.45
  6. Step 6: Final answer
    x = 5,463.14

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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.