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Finding the Fourth Proportional to 6,391.15, 9,568.95 and 3,264.40

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Solution

The fourth proportional to 6,391.15, 9,568.95 and 3,264.40 is: 4,887.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.15 : 9,568.95 = 3,264.40 : x
  2. Step 2: Convert to fraction form
    6,391.15/9,568.95 = 3,264.40/x
  3. Step 3: Cross multiply
    6,391.15x = 9,568.95 × 3,264.40
  4. Step 4: Simplify right side
    6,391.15x = 31,236,880.38
  5. Step 5: Solve for x
    x = 31,236,880.38/6,391.15
  6. Step 6: Final answer
    x = 4,887.52

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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.