Home / 2,438.91-3,660.45-979.11

Finding the Fourth Proportional to 2,438.91, 3,660.45 and 979.11

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Solution

The fourth proportional to 2,438.91, 3,660.45 and 979.11 is: 1,469.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.91 : 3,660.45 = 979.11 : x
  2. Step 2: Convert to fraction form
    2,438.91/3,660.45 = 979.11/x
  3. Step 3: Cross multiply
    2,438.91x = 3,660.45 × 979.11
  4. Step 4: Simplify right side
    2,438.91x = 3,583,983.20
  5. Step 5: Solve for x
    x = 3,583,983.20/2,438.91
  6. Step 6: Final answer
    x = 1,469.50

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1.5x scale

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.