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Finding the Fourth Proportional to 8,633.28, 12,940.42 and 4,927.42

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Solution

The fourth proportional to 8,633.28, 12,940.42 and 4,927.42 is: 7,385.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.28 : 12,940.42 = 4,927.42 : x
  2. Step 2: Convert to fraction form
    8,633.28/12,940.42 = 4,927.42/x
  3. Step 3: Cross multiply
    8,633.28x = 12,940.42 × 4,927.42
  4. Step 4: Simplify right side
    8,633.28x = 63,762,884.32
  5. Step 5: Solve for x
    x = 63,762,884.32/8,633.28
  6. Step 6: Final answer
    x = 7,385.71

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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.