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Finding the Fourth Proportional to 4,651.72, 6,978.45 and 2,996.62

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Solution

The fourth proportional to 4,651.72, 6,978.45 and 2,996.62 is: 4,495.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,651.72 : 6,978.45 = 2,996.62 : x
  2. Step 2: Convert to fraction form
    4,651.72/6,978.45 = 2,996.62/x
  3. Step 3: Cross multiply
    4,651.72x = 6,978.45 × 2,996.62
  4. Step 4: Simplify right side
    4,651.72x = 20,911,727.95
  5. Step 5: Solve for x
    x = 20,911,727.95/4,651.72
  6. Step 6: Final answer
    x = 4,495.49

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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.