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Finding the Fourth Proportional to 4,479.99, 6,721.86 and 2,399.46

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Solution

The fourth proportional to 4,479.99, 6,721.86 and 2,399.46 is: 3,600.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.99 : 6,721.86 = 2,399.46 : x
  2. Step 2: Convert to fraction form
    4,479.99/6,721.86 = 2,399.46/x
  3. Step 3: Cross multiply
    4,479.99x = 6,721.86 × 2,399.46
  4. Step 4: Simplify right side
    4,479.99x = 16,128,834.20
  5. Step 5: Solve for x
    x = 16,128,834.20/4,479.99
  6. Step 6: Final answer
    x = 3,600.19

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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.