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Finding the Fourth Proportional to 6,750.91, 9,314.85 and 4,961.20

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Solution

The fourth proportional to 6,750.91, 9,314.85 and 4,961.20 is: 6,845.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,750.91 : 9,314.85 = 4,961.20 : x
  2. Step 2: Convert to fraction form
    6,750.91/9,314.85 = 4,961.20/x
  3. Step 3: Cross multiply
    6,750.91x = 9,314.85 × 4,961.20
  4. Step 4: Simplify right side
    6,750.91x = 46,212,833.82
  5. Step 5: Solve for x
    x = 46,212,833.82/6,750.91
  6. Step 6: Final answer
    x = 6,845.42

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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.