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Finding the Fourth Proportional to 7,989.98, 11,026.65 and 4,453.19

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Solution

The fourth proportional to 7,989.98, 11,026.65 and 4,453.19 is: 6,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.98 : 11,026.65 = 4,453.19 : x
  2. Step 2: Convert to fraction form
    7,989.98/11,026.65 = 4,453.19/x
  3. Step 3: Cross multiply
    7,989.98x = 11,026.65 × 4,453.19
  4. Step 4: Simplify right side
    7,989.98x = 49,103,712.38
  5. Step 5: Solve for x
    x = 49,103,712.38/7,989.98
  6. Step 6: Final answer
    x = 6,145.66

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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.