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Finding the Fourth Proportional to 8,617.17, 11,890.83 and 4,840.05

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Solution

The fourth proportional to 8,617.17, 11,890.83 and 4,840.05 is: 6,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.17 : 11,890.83 = 4,840.05 : x
  2. Step 2: Convert to fraction form
    8,617.17/11,890.83 = 4,840.05/x
  3. Step 3: Cross multiply
    8,617.17x = 11,890.83 × 4,840.05
  4. Step 4: Simplify right side
    8,617.17x = 57,552,211.74
  5. Step 5: Solve for x
    x = 57,552,211.74/8,617.17
  6. Step 6: Final answer
    x = 6,678.78

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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.