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Finding the Fourth Proportional to 8,603, 11,872.32 and 4,877

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Solution

The fourth proportional to 8,603, 11,872.32 and 4,877 is: 6,730.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603 : 11,872.32 = 4,877 : x
  2. Step 2: Convert to fraction form
    8,603/11,872.32 = 4,877/x
  3. Step 3: Cross multiply
    8,603x = 11,872.32 × 4,877
  4. Step 4: Simplify right side
    8,603x = 57,901,304.64
  5. Step 5: Solve for x
    x = 57,901,304.64/8,603
  6. Step 6: Final answer
    x = 6,730.36

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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.