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Finding the Fourth Proportional to 8,625.72, 12,940.50 and 4,728.12

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Solution

The fourth proportional to 8,625.72, 12,940.50 and 4,728.12 is: 7,093.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.72 : 12,940.50 = 4,728.12 : x
  2. Step 2: Convert to fraction form
    8,625.72/12,940.50 = 4,728.12/x
  3. Step 3: Cross multiply
    8,625.72x = 12,940.50 × 4,728.12
  4. Step 4: Simplify right side
    8,625.72x = 61,184,236.86
  5. Step 5: Solve for x
    x = 61,184,236.86/8,625.72
  6. Step 6: Final answer
    x = 7,093.23

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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.