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Finding the Fourth Proportional to 6,802, 9,385.92 and 3,970

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Solution

The fourth proportional to 6,802, 9,385.92 and 3,970 is: 5,478.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,802 : 9,385.92 = 3,970 : x
  2. Step 2: Convert to fraction form
    6,802/9,385.92 = 3,970/x
  3. Step 3: Cross multiply
    6,802x = 9,385.92 × 3,970
  4. Step 4: Simplify right side
    6,802x = 37,262,102.40
  5. Step 5: Solve for x
    x = 37,262,102.40/6,802
  6. Step 6: Final answer
    x = 5,478.11

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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.