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Finding the Fourth Proportional to 5,668.72, 7,821.70 and 3,310.41

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Solution

The fourth proportional to 5,668.72, 7,821.70 and 3,310.41 is: 4,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,668.72 : 7,821.70 = 3,310.41 : x
  2. Step 2: Convert to fraction form
    5,668.72/7,821.70 = 3,310.41/x
  3. Step 3: Cross multiply
    5,668.72x = 7,821.70 × 3,310.41
  4. Step 4: Simplify right side
    5,668.72x = 25,893,033.90
  5. Step 5: Solve for x
    x = 25,893,033.90/5,668.72
  6. Step 6: Final answer
    x = 4,567.70

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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.