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Finding the Fourth Proportional to 5,720.76, 8,581.14 and 3,122.28

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Solution

The fourth proportional to 5,720.76, 8,581.14 and 3,122.28 is: 4,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720.76 : 8,581.14 = 3,122.28 : x
  2. Step 2: Convert to fraction form
    5,720.76/8,581.14 = 3,122.28/x
  3. Step 3: Cross multiply
    5,720.76x = 8,581.14 × 3,122.28
  4. Step 4: Simplify right side
    5,720.76x = 26,792,721.80
  5. Step 5: Solve for x
    x = 26,792,721.80/5,720.76
  6. Step 6: Final answer
    x = 4,683.42

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Similar ratio
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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.