Home / 4,469.20-6,699.45-2,128.58

Finding the Fourth Proportional to 4,469.20, 6,699.45 and 2,128.58

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Solution

The fourth proportional to 4,469.20, 6,699.45 and 2,128.58 is: 3,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,469.20 : 6,699.45 = 2,128.58 : x
  2. Step 2: Convert to fraction form
    4,469.20/6,699.45 = 2,128.58/x
  3. Step 3: Cross multiply
    4,469.20x = 6,699.45 × 2,128.58
  4. Step 4: Simplify right side
    4,469.20x = 14,260,315.77
  5. Step 5: Solve for x
    x = 14,260,315.77/4,469.20
  6. Step 6: Final answer
    x = 3,190.80

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1.5x scale

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.