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Finding the Fourth Proportional to 6,370.80, 8,789.44 and 3,717.28

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Solution

The fourth proportional to 6,370.80, 8,789.44 and 3,717.28 is: 5,128.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,370.80 : 8,789.44 = 3,717.28 : x
  2. Step 2: Convert to fraction form
    6,370.80/8,789.44 = 3,717.28/x
  3. Step 3: Cross multiply
    6,370.80x = 8,789.44 × 3,717.28
  4. Step 4: Simplify right side
    6,370.80x = 32,672,809.52
  5. Step 5: Solve for x
    x = 32,672,809.52/6,370.80
  6. Step 6: Final answer
    x = 5,128.53

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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.