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Finding the Fourth Proportional to 9,286.40, 13,929.60 and 6,003.20

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Solution

The fourth proportional to 9,286.40, 13,929.60 and 6,003.20 is: 9,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,286.40 : 13,929.60 = 6,003.20 : x
  2. Step 2: Convert to fraction form
    9,286.40/13,929.60 = 6,003.20/x
  3. Step 3: Cross multiply
    9,286.40x = 13,929.60 × 6,003.20
  4. Step 4: Simplify right side
    9,286.40x = 83,622,174.72
  5. Step 5: Solve for x
    x = 83,622,174.72/9,286.40
  6. Step 6: Final answer
    x = 9,004.80

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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.