Home / 8,558.20-12,839.70-4,175.80

Finding the Fourth Proportional to 8,558.20, 12,839.70 and 4,175.80

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Solution

The fourth proportional to 8,558.20, 12,839.70 and 4,175.80 is: 6,264.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558.20 : 12,839.70 = 4,175.80 : x
  2. Step 2: Convert to fraction form
    8,558.20/12,839.70 = 4,175.80/x
  3. Step 3: Cross multiply
    8,558.20x = 12,839.70 × 4,175.80
  4. Step 4: Simplify right side
    8,558.20x = 53,616,019.26
  5. Step 5: Solve for x
    x = 53,616,019.26/8,558.20
  6. Step 6: Final answer
    x = 6,264.87

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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.