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Finding the Fourth Proportional to 8,428.97, 12,643.46 and 2,272.97

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Solution

The fourth proportional to 8,428.97, 12,643.46 and 2,272.97 is: 3,409.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.97 : 12,643.46 = 2,272.97 : x
  2. Step 2: Convert to fraction form
    8,428.97/12,643.46 = 2,272.97/x
  3. Step 3: Cross multiply
    8,428.97x = 12,643.46 × 2,272.97
  4. Step 4: Simplify right side
    8,428.97x = 28,738,178.11
  5. Step 5: Solve for x
    x = 28,738,178.11/8,428.97
  6. Step 6: Final answer
    x = 3,409.45

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Similar ratio
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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.