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Finding the Fourth Proportional to 5,360.78, 8,039.90 and 3,021.82

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Solution

The fourth proportional to 5,360.78, 8,039.90 and 3,021.82 is: 4,532.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,360.78 : 8,039.90 = 3,021.82 : x
  2. Step 2: Convert to fraction form
    5,360.78/8,039.90 = 3,021.82/x
  3. Step 3: Cross multiply
    5,360.78x = 8,039.90 × 3,021.82
  4. Step 4: Simplify right side
    5,360.78x = 24,295,130.62
  5. Step 5: Solve for x
    x = 24,295,130.62/5,360.78
  6. Step 6: Final answer
    x = 4,532.01

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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.