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Finding the Fourth Proportional to 6,391.95, 8,822.54 and 5,727.66

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Solution

The fourth proportional to 6,391.95, 8,822.54 and 5,727.66 is: 7,905.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.95 : 8,822.54 = 5,727.66 : x
  2. Step 2: Convert to fraction form
    6,391.95/8,822.54 = 5,727.66/x
  3. Step 3: Cross multiply
    6,391.95x = 8,822.54 × 5,727.66
  4. Step 4: Simplify right side
    6,391.95x = 50,532,523.78
  5. Step 5: Solve for x
    x = 50,532,523.78/6,391.95
  6. Step 6: Final answer
    x = 7,905.65

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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.