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Finding the Fourth Proportional to 3,771.92, 5,630.05 and 3,328.76

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Solution

The fourth proportional to 3,771.92, 5,630.05 and 3,328.76 is: 4,968.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,771.92 : 5,630.05 = 3,328.76 : x
  2. Step 2: Convert to fraction form
    3,771.92/5,630.05 = 3,328.76/x
  3. Step 3: Cross multiply
    3,771.92x = 5,630.05 × 3,328.76
  4. Step 4: Simplify right side
    3,771.92x = 18,741,085.24
  5. Step 5: Solve for x
    x = 18,741,085.24/3,771.92
  6. Step 6: Final answer
    x = 4,968.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.