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Finding the Fourth Proportional to 4,874.92, 6,720.20 and 3,454.21

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Solution

The fourth proportional to 4,874.92, 6,720.20 and 3,454.21 is: 4,761.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,874.92 : 6,720.20 = 3,454.21 : x
  2. Step 2: Convert to fraction form
    4,874.92/6,720.20 = 3,454.21/x
  3. Step 3: Cross multiply
    4,874.92x = 6,720.20 × 3,454.21
  4. Step 4: Simplify right side
    4,874.92x = 23,212,986.12
  5. Step 5: Solve for x
    x = 23,212,986.12/4,874.92
  6. Step 6: Final answer
    x = 4,761.72

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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.