Home / 8,592.20-12,890.70-4,209.80

Finding the Fourth Proportional to 8,592.20, 12,890.70 and 4,209.80

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Solution

The fourth proportional to 8,592.20, 12,890.70 and 4,209.80 is: 6,315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,592.20 : 12,890.70 = 4,209.80 : x
  2. Step 2: Convert to fraction form
    8,592.20/12,890.70 = 4,209.80/x
  3. Step 3: Cross multiply
    8,592.20x = 12,890.70 × 4,209.80
  4. Step 4: Simplify right side
    8,592.20x = 54,267,268.86
  5. Step 5: Solve for x
    x = 54,267,268.86/8,592.20
  6. Step 6: Final answer
    x = 6,315.88

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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.