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Finding the Fourth Proportional to 6,392.88, 8,822.09 and 3,560.18

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Solution

The fourth proportional to 6,392.88, 8,822.09 and 3,560.18 is: 4,912.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.88 : 8,822.09 = 3,560.18 : x
  2. Step 2: Convert to fraction form
    6,392.88/8,822.09 = 3,560.18/x
  3. Step 3: Cross multiply
    6,392.88x = 8,822.09 × 3,560.18
  4. Step 4: Simplify right side
    6,392.88x = 31,408,166.46
  5. Step 5: Solve for x
    x = 31,408,166.46/6,392.88
  6. Step 6: Final answer
    x = 4,912.99

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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.