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Finding the Fourth Proportional to 8,912.65, 13,393.21 and 4,755.60

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Solution

The fourth proportional to 8,912.65, 13,393.21 and 4,755.60 is: 7,146.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.65 : 13,393.21 = 4,755.60 : x
  2. Step 2: Convert to fraction form
    8,912.65/13,393.21 = 4,755.60/x
  3. Step 3: Cross multiply
    8,912.65x = 13,393.21 × 4,755.60
  4. Step 4: Simplify right side
    8,912.65x = 63,692,658.73
  5. Step 5: Solve for x
    x = 63,692,658.73/8,912.65
  6. Step 6: Final answer
    x = 7,146.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.