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Finding the Fourth Proportional to 4,388.79, 6,579.54 and 3,419.22

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Solution

The fourth proportional to 4,388.79, 6,579.54 and 3,419.22 is: 5,125.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,388.79 : 6,579.54 = 3,419.22 : x
  2. Step 2: Convert to fraction form
    4,388.79/6,579.54 = 3,419.22/x
  3. Step 3: Cross multiply
    4,388.79x = 6,579.54 × 3,419.22
  4. Step 4: Simplify right side
    4,388.79x = 22,496,894.76
  5. Step 5: Solve for x
    x = 22,496,894.76/4,388.79
  6. Step 6: Final answer
    x = 5,125.99

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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.