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Finding the Fourth Proportional to 8,540.64, 12,803.04 and 4,645.44

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Solution

The fourth proportional to 8,540.64, 12,803.04 and 4,645.44 is: 6,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540.64 : 12,803.04 = 4,645.44 : x
  2. Step 2: Convert to fraction form
    8,540.64/12,803.04 = 4,645.44/x
  3. Step 3: Cross multiply
    8,540.64x = 12,803.04 × 4,645.44
  4. Step 4: Simplify right side
    8,540.64x = 59,475,754.14
  5. Step 5: Solve for x
    x = 59,475,754.14/8,540.64
  6. Step 6: Final answer
    x = 6,963.85

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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.