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Finding the Fourth Proportional to 11,872.70, 17,807.48 and 5,297.36

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Solution

The fourth proportional to 11,872.70, 17,807.48 and 5,297.36 is: 7,945.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,872.70 : 17,807.48 = 5,297.36 : x
  2. Step 2: Convert to fraction form
    11,872.70/17,807.48 = 5,297.36/x
  3. Step 3: Cross multiply
    11,872.70x = 17,807.48 × 5,297.36
  4. Step 4: Simplify right side
    11,872.70x = 94,332,632.25
  5. Step 5: Solve for x
    x = 94,332,632.25/11,872.70
  6. Step 6: Final answer
    x = 7,945.34

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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.