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Finding the Fourth Proportional to 6,388.88, 9,579.67 and 2,877.53

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Solution

The fourth proportional to 6,388.88, 9,579.67 and 2,877.53 is: 4,314.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.88 : 9,579.67 = 2,877.53 : x
  2. Step 2: Convert to fraction form
    6,388.88/9,579.67 = 2,877.53/x
  3. Step 3: Cross multiply
    6,388.88x = 9,579.67 × 2,877.53
  4. Step 4: Simplify right side
    6,388.88x = 27,565,732.72
  5. Step 5: Solve for x
    x = 27,565,732.72/6,388.88
  6. Step 6: Final answer
    x = 4,314.65

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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.