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Finding the Fourth Proportional to 8,866.19, 13,303.94 and 3,939.36

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Solution

The fourth proportional to 8,866.19, 13,303.94 and 3,939.36 is: 5,911.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.19 : 13,303.94 = 3,939.36 : x
  2. Step 2: Convert to fraction form
    8,866.19/13,303.94 = 3,939.36/x
  3. Step 3: Cross multiply
    8,866.19x = 13,303.94 × 3,939.36
  4. Step 4: Simplify right side
    8,866.19x = 52,408,989.38
  5. Step 5: Solve for x
    x = 52,408,989.38/8,866.19
  6. Step 6: Final answer
    x = 5,911.11

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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.