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Finding the Fourth Proportional to 6,353.88, 8,766.45 and 4,112.20

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Solution

The fourth proportional to 6,353.88, 8,766.45 and 4,112.20 is: 5,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,353.88 : 8,766.45 = 4,112.20 : x
  2. Step 2: Convert to fraction form
    6,353.88/8,766.45 = 4,112.20/x
  3. Step 3: Cross multiply
    6,353.88x = 8,766.45 × 4,112.20
  4. Step 4: Simplify right side
    6,353.88x = 36,049,395.69
  5. Step 5: Solve for x
    x = 36,049,395.69/6,353.88
  6. Step 6: Final answer
    x = 5,673.60

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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.