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Finding the Fourth Proportional to 8,701.88, 12,008.60 and 4,722.99

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Solution

The fourth proportional to 8,701.88, 12,008.60 and 4,722.99 is: 6,517.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.88 : 12,008.60 = 4,722.99 : x
  2. Step 2: Convert to fraction form
    8,701.88/12,008.60 = 4,722.99/x
  3. Step 3: Cross multiply
    8,701.88x = 12,008.60 × 4,722.99
  4. Step 4: Simplify right side
    8,701.88x = 56,716,527.74
  5. Step 5: Solve for x
    x = 56,716,527.74/8,701.88
  6. Step 6: Final answer
    x = 6,517.73

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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.