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Finding the Fourth Proportional to 7,989.88, 11,026.05 and 4,453.02

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Solution

The fourth proportional to 7,989.88, 11,026.05 and 4,453.02 is: 6,145.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.88 : 11,026.05 = 4,453.02 : x
  2. Step 2: Convert to fraction form
    7,989.88/11,026.05 = 4,453.02/x
  3. Step 3: Cross multiply
    7,989.88x = 11,026.05 × 4,453.02
  4. Step 4: Simplify right side
    7,989.88x = 49,099,221.17
  5. Step 5: Solve for x
    x = 49,099,221.17/7,989.88
  6. Step 6: Final answer
    x = 6,145.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.