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Finding the Fourth Proportional to 4,972.70, 6,861.16 and 4,179.04

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Solution

The fourth proportional to 4,972.70, 6,861.16 and 4,179.04 is: 5,766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,972.70 : 6,861.16 = 4,179.04 : x
  2. Step 2: Convert to fraction form
    4,972.70/6,861.16 = 4,179.04/x
  3. Step 3: Cross multiply
    4,972.70x = 6,861.16 × 4,179.04
  4. Step 4: Simplify right side
    4,972.70x = 28,673,062.09
  5. Step 5: Solve for x
    x = 28,673,062.09/4,972.70
  6. Step 6: Final answer
    x = 5,766.10

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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.