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Finding the Fourth Proportional to 6,351.89, 8,759.90 and 4,111.43

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Solution

The fourth proportional to 6,351.89, 8,759.90 and 4,111.43 is: 5,670.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,351.89 : 8,759.90 = 4,111.43 : x
  2. Step 2: Convert to fraction form
    6,351.89/8,759.90 = 4,111.43/x
  3. Step 3: Cross multiply
    6,351.89x = 8,759.90 × 4,111.43
  4. Step 4: Simplify right side
    6,351.89x = 36,015,715.66
  5. Step 5: Solve for x
    x = 36,015,715.66/6,351.89
  6. Step 6: Final answer
    x = 5,670.08

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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.