Home / 2,439.92-3,661.29-2,420.11

Finding the Fourth Proportional to 2,439.92, 3,661.29 and 2,420.11

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Solution

The fourth proportional to 2,439.92, 3,661.29 and 2,420.11 is: 3,631.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.92 : 3,661.29 = 2,420.11 : x
  2. Step 2: Convert to fraction form
    2,439.92/3,661.29 = 2,420.11/x
  3. Step 3: Cross multiply
    2,439.92x = 3,661.29 × 2,420.11
  4. Step 4: Simplify right side
    2,439.92x = 8,860,729.12
  5. Step 5: Solve for x
    x = 8,860,729.12/2,439.92
  6. Step 6: Final answer
    x = 3,631.56

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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.