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Finding the Fourth Proportional to 8,893.28, 12,273 and 5,356.64

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Solution

The fourth proportional to 8,893.28, 12,273 and 5,356.64 is: 7,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,893.28 : 12,273 = 5,356.64 : x
  2. Step 2: Convert to fraction form
    8,893.28/12,273 = 5,356.64/x
  3. Step 3: Cross multiply
    8,893.28x = 12,273 × 5,356.64
  4. Step 4: Simplify right side
    8,893.28x = 65,742,042.72
  5. Step 5: Solve for x
    x = 65,742,042.72/8,893.28
  6. Step 6: Final answer
    x = 7,392.33

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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.