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Finding the Fourth Proportional to 7,645.91, 11,468.89 and 2,099.28

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Solution

The fourth proportional to 7,645.91, 11,468.89 and 2,099.28 is: 3,148.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,645.91 : 11,468.89 = 2,099.28 : x
  2. Step 2: Convert to fraction form
    7,645.91/11,468.89 = 2,099.28/x
  3. Step 3: Cross multiply
    7,645.91x = 11,468.89 × 2,099.28
  4. Step 4: Simplify right side
    7,645.91x = 24,076,457.03
  5. Step 5: Solve for x
    x = 24,076,457.03/7,645.91
  6. Step 6: Final answer
    x = 3,148.93

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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.