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Finding the Fourth Proportional to 8,491.64, 12,723.98 and 5,708.06

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Solution

The fourth proportional to 8,491.64, 12,723.98 and 5,708.06 is: 8,553.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.64 : 12,723.98 = 5,708.06 : x
  2. Step 2: Convert to fraction form
    8,491.64/12,723.98 = 5,708.06/x
  3. Step 3: Cross multiply
    8,491.64x = 12,723.98 × 5,708.06
  4. Step 4: Simplify right side
    8,491.64x = 72,629,241.28
  5. Step 5: Solve for x
    x = 72,629,241.28/8,491.64
  6. Step 6: Final answer
    x = 8,553.03

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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.