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Finding the Fourth Proportional to 3,579.76, 5,368.99 and 1,499.21

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Solution

The fourth proportional to 3,579.76, 5,368.99 and 1,499.21 is: 2,248.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.76 : 5,368.99 = 1,499.21 : x
  2. Step 2: Convert to fraction form
    3,579.76/5,368.99 = 1,499.21/x
  3. Step 3: Cross multiply
    3,579.76x = 5,368.99 × 1,499.21
  4. Step 4: Simplify right side
    3,579.76x = 8,049,243.50
  5. Step 5: Solve for x
    x = 8,049,243.50/3,579.76
  6. Step 6: Final answer
    x = 2,248.54

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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.