Home / 3,930.46-5,421.78-2,357.62

Finding the Fourth Proportional to 3,930.46, 5,421.78 and 2,357.62

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Solution

The fourth proportional to 3,930.46, 5,421.78 and 2,357.62 is: 3,252.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.46 : 5,421.78 = 2,357.62 : x
  2. Step 2: Convert to fraction form
    3,930.46/5,421.78 = 2,357.62/x
  3. Step 3: Cross multiply
    3,930.46x = 5,421.78 × 2,357.62
  4. Step 4: Simplify right side
    3,930.46x = 12,782,496.96
  5. Step 5: Solve for x
    x = 12,782,496.96/3,930.46
  6. Step 6: Final answer
    x = 3,252.16

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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.