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Finding the Fourth Proportional to 8,640.98, 12,963.52 and 2,797.58

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Solution

The fourth proportional to 8,640.98, 12,963.52 and 2,797.58 is: 4,197.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.98 : 12,963.52 = 2,797.58 : x
  2. Step 2: Convert to fraction form
    8,640.98/12,963.52 = 2,797.58/x
  3. Step 3: Cross multiply
    8,640.98x = 12,963.52 × 2,797.58
  4. Step 4: Simplify right side
    8,640.98x = 36,266,484.28
  5. Step 5: Solve for x
    x = 36,266,484.28/8,640.98
  6. Step 6: Final answer
    x = 4,197.03

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1.5x scale

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.