Home / 6,421.32-9,631.50-3,822

Finding the Fourth Proportional to 6,421.32, 9,631.50 and 3,822

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Solution

The fourth proportional to 6,421.32, 9,631.50 and 3,822 is: 5,732.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.32 : 9,631.50 = 3,822 : x
  2. Step 2: Convert to fraction form
    6,421.32/9,631.50 = 3,822/x
  3. Step 3: Cross multiply
    6,421.32x = 9,631.50 × 3,822
  4. Step 4: Simplify right side
    6,421.32x = 36,811,593
  5. Step 5: Solve for x
    x = 36,811,593/6,421.32
  6. Step 6: Final answer
    x = 5,732.71

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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.