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Finding the Fourth Proportional to 8,898, 12,279.26 and 5,361.36

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Solution

The fourth proportional to 8,898, 12,279.26 and 5,361.36 is: 7,398.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898 : 12,279.26 = 5,361.36 : x
  2. Step 2: Convert to fraction form
    8,898/12,279.26 = 5,361.36/x
  3. Step 3: Cross multiply
    8,898x = 12,279.26 × 5,361.36
  4. Step 4: Simplify right side
    8,898x = 65,833,533.39
  5. Step 5: Solve for x
    x = 65,833,533.39/8,898
  6. Step 6: Final answer
    x = 7,398.69

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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.