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Finding the Fourth Proportional to 6,538.71, 9,809.28 and 2,156.48

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Solution

The fourth proportional to 6,538.71, 9,809.28 and 2,156.48 is: 3,235.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,538.71 : 9,809.28 = 2,156.48 : x
  2. Step 2: Convert to fraction form
    6,538.71/9,809.28 = 2,156.48/x
  3. Step 3: Cross multiply
    6,538.71x = 9,809.28 × 2,156.48
  4. Step 4: Simplify right side
    6,538.71x = 21,153,467.09
  5. Step 5: Solve for x
    x = 21,153,467.09/6,538.71
  6. Step 6: Final answer
    x = 3,235.11

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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.