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Finding the Fourth Proportional to 9,296.44, 12,810.18 and 8,640.28

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Solution

The fourth proportional to 9,296.44, 12,810.18 and 8,640.28 is: 11,906.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,296.44 : 12,810.18 = 8,640.28 : x
  2. Step 2: Convert to fraction form
    9,296.44/12,810.18 = 8,640.28/x
  3. Step 3: Cross multiply
    9,296.44x = 12,810.18 × 8,640.28
  4. Step 4: Simplify right side
    9,296.44x = 110,683,542.05
  5. Step 5: Solve for x
    x = 110,683,542.05/9,296.44
  6. Step 6: Final answer
    x = 11,906.01

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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.