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Finding the Fourth Proportional to 6,689.50, 9,232.05 and 3,895.54

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Solution

The fourth proportional to 6,689.50, 9,232.05 and 3,895.54 is: 5,376.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.50 : 9,232.05 = 3,895.54 : x
  2. Step 2: Convert to fraction form
    6,689.50/9,232.05 = 3,895.54/x
  3. Step 3: Cross multiply
    6,689.50x = 9,232.05 × 3,895.54
  4. Step 4: Simplify right side
    6,689.50x = 35,963,820.06
  5. Step 5: Solve for x
    x = 35,963,820.06/6,689.50
  6. Step 6: Final answer
    x = 5,376.16

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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.