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Finding the Fourth Proportional to 8,589.84, 12,885.05 and 4,085.95

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Solution

The fourth proportional to 8,589.84, 12,885.05 and 4,085.95 is: 6,129.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.84 : 12,885.05 = 4,085.95 : x
  2. Step 2: Convert to fraction form
    8,589.84/12,885.05 = 4,085.95/x
  3. Step 3: Cross multiply
    8,589.84x = 12,885.05 × 4,085.95
  4. Step 4: Simplify right side
    8,589.84x = 52,647,617.41
  5. Step 5: Solve for x
    x = 52,647,617.41/8,589.84
  6. Step 6: Final answer
    x = 6,129.06

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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.