Home / 8,858.90-13,285.20-3,919.70

Finding the Fourth Proportional to 8,858.90, 13,285.20 and 3,919.70

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Solution

The fourth proportional to 8,858.90, 13,285.20 and 3,919.70 is: 5,878.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.90 : 13,285.20 = 3,919.70 : x
  2. Step 2: Convert to fraction form
    8,858.90/13,285.20 = 3,919.70/x
  3. Step 3: Cross multiply
    8,858.90x = 13,285.20 × 3,919.70
  4. Step 4: Simplify right side
    8,858.90x = 52,073,998.44
  5. Step 5: Solve for x
    x = 52,073,998.44/8,858.90
  6. Step 6: Final answer
    x = 5,878.16

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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.