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Finding the Fourth Proportional to 7,728.53, 10,667.43 and 4,745.57

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Solution

The fourth proportional to 7,728.53, 10,667.43 and 4,745.57 is: 6,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.53 : 10,667.43 = 4,745.57 : x
  2. Step 2: Convert to fraction form
    7,728.53/10,667.43 = 4,745.57/x
  3. Step 3: Cross multiply
    7,728.53x = 10,667.43 × 4,745.57
  4. Step 4: Simplify right side
    7,728.53x = 50,623,035.79
  5. Step 5: Solve for x
    x = 50,623,035.79/7,728.53
  6. Step 6: Final answer
    x = 6,550.15

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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.