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Finding the Fourth Proportional to 6,391.95, 8,820.67 and 3,596.91

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Solution

The fourth proportional to 6,391.95, 8,820.67 and 3,596.91 is: 4,963.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.95 : 8,820.67 = 3,596.91 : x
  2. Step 2: Convert to fraction form
    6,391.95/8,820.67 = 3,596.91/x
  3. Step 3: Cross multiply
    6,391.95x = 8,820.67 × 3,596.91
  4. Step 4: Simplify right side
    6,391.95x = 31,727,156.13
  5. Step 5: Solve for x
    x = 31,727,156.13/6,391.95
  6. Step 6: Final answer
    x = 4,963.61

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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.