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Finding the Fourth Proportional to 6,872.60, 9,490.49 and 6,504.32

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Solution

The fourth proportional to 6,872.60, 9,490.49 and 6,504.32 is: 8,981.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.60 : 9,490.49 = 6,504.32 : x
  2. Step 2: Convert to fraction form
    6,872.60/9,490.49 = 6,504.32/x
  3. Step 3: Cross multiply
    6,872.60x = 9,490.49 × 6,504.32
  4. Step 4: Simplify right side
    6,872.60x = 61,729,103.94
  5. Step 5: Solve for x
    x = 61,729,103.94/6,872.60
  6. Step 6: Final answer
    x = 8,981.92

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1.5x scale

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.