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Finding the Fourth Proportional to 4,791.96, 7,189.74 and 1,672.20

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Solution

The fourth proportional to 4,791.96, 7,189.74 and 1,672.20 is: 2,508.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,791.96 : 7,189.74 = 1,672.20 : x
  2. Step 2: Convert to fraction form
    4,791.96/7,189.74 = 1,672.20/x
  3. Step 3: Cross multiply
    4,791.96x = 7,189.74 × 1,672.20
  4. Step 4: Simplify right side
    4,791.96x = 12,022,683.23
  5. Step 5: Solve for x
    x = 12,022,683.23/4,791.96
  6. Step 6: Final answer
    x = 2,508.93

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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.