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Finding the Fourth Proportional to 8,643.44, 12,953.88 and 3,961.76

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Solution

The fourth proportional to 8,643.44, 12,953.88 and 3,961.76 is: 5,937.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.44 : 12,953.88 = 3,961.76 : x
  2. Step 2: Convert to fraction form
    8,643.44/12,953.88 = 3,961.76/x
  3. Step 3: Cross multiply
    8,643.44x = 12,953.88 × 3,961.76
  4. Step 4: Simplify right side
    8,643.44x = 51,320,163.63
  5. Step 5: Solve for x
    x = 51,320,163.63/8,643.44
  6. Step 6: Final answer
    x = 5,937.47

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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.