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Finding the Fourth Proportional to 8,917.86, 13,369.65 and 4,235.52

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Solution

The fourth proportional to 8,917.86, 13,369.65 and 4,235.52 is: 6,349.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.86 : 13,369.65 = 4,235.52 : x
  2. Step 2: Convert to fraction form
    8,917.86/13,369.65 = 4,235.52/x
  3. Step 3: Cross multiply
    8,917.86x = 13,369.65 × 4,235.52
  4. Step 4: Simplify right side
    8,917.86x = 56,627,419.97
  5. Step 5: Solve for x
    x = 56,627,419.97/8,917.86
  6. Step 6: Final answer
    x = 6,349.89

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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.