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Finding the Fourth Proportional to 3,281.89, 4,528.98 and 1,789.80

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Solution

The fourth proportional to 3,281.89, 4,528.98 and 1,789.80 is: 2,469.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.89 : 4,528.98 = 1,789.80 : x
  2. Step 2: Convert to fraction form
    3,281.89/4,528.98 = 1,789.80/x
  3. Step 3: Cross multiply
    3,281.89x = 4,528.98 × 1,789.80
  4. Step 4: Simplify right side
    3,281.89x = 8,105,968.40
  5. Step 5: Solve for x
    x = 8,105,968.40/3,281.89
  6. Step 6: Final answer
    x = 2,469.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.