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Finding the Fourth Proportional to 8,956.70, 12,361.53 and 5,371.85

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Solution

The fourth proportional to 8,956.70, 12,361.53 and 5,371.85 is: 7,413.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,956.70 : 12,361.53 = 5,371.85 : x
  2. Step 2: Convert to fraction form
    8,956.70/12,361.53 = 5,371.85/x
  3. Step 3: Cross multiply
    8,956.70x = 12,361.53 × 5,371.85
  4. Step 4: Simplify right side
    8,956.70x = 66,404,284.93
  5. Step 5: Solve for x
    x = 66,404,284.93/8,956.70
  6. Step 6: Final answer
    x = 7,413.92

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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.