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Finding the Fourth Proportional to 6,651.92, 9,978.36 and 2,038.16

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Solution

The fourth proportional to 6,651.92, 9,978.36 and 2,038.16 is: 3,057.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.92 : 9,978.36 = 2,038.16 : x
  2. Step 2: Convert to fraction form
    6,651.92/9,978.36 = 2,038.16/x
  3. Step 3: Cross multiply
    6,651.92x = 9,978.36 × 2,038.16
  4. Step 4: Simplify right side
    6,651.92x = 20,337,494.22
  5. Step 5: Solve for x
    x = 20,337,494.22/6,651.92
  6. Step 6: Final answer
    x = 3,057.39

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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.