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Finding the Fourth Proportional to 8,625.46, 12,938.19 and 6,885.94

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Solution

The fourth proportional to 8,625.46, 12,938.19 and 6,885.94 is: 10,328.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.46 : 12,938.19 = 6,885.94 : x
  2. Step 2: Convert to fraction form
    8,625.46/12,938.19 = 6,885.94/x
  3. Step 3: Cross multiply
    8,625.46x = 12,938.19 × 6,885.94
  4. Step 4: Simplify right side
    8,625.46x = 89,091,600.05
  5. Step 5: Solve for x
    x = 89,091,600.05/8,625.46
  6. Step 6: Final answer
    x = 10,328.91

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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.