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Finding the Fourth Proportional to 4,986.74, 7,480.11 and 2,792.18

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Solution

The fourth proportional to 4,986.74, 7,480.11 and 2,792.18 is: 4,188.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.74 : 7,480.11 = 2,792.18 : x
  2. Step 2: Convert to fraction form
    4,986.74/7,480.11 = 2,792.18/x
  3. Step 3: Cross multiply
    4,986.74x = 7,480.11 × 2,792.18
  4. Step 4: Simplify right side
    4,986.74x = 20,885,813.54
  5. Step 5: Solve for x
    x = 20,885,813.54/4,986.74
  6. Step 6: Final answer
    x = 4,188.27

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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.