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Finding the Fourth Proportional to 7,718.98, 11,571.99 and 5,246.86

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Solution

The fourth proportional to 7,718.98, 11,571.99 and 5,246.86 is: 7,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.98 : 11,571.99 = 5,246.86 : x
  2. Step 2: Convert to fraction form
    7,718.98/11,571.99 = 5,246.86/x
  3. Step 3: Cross multiply
    7,718.98x = 11,571.99 × 5,246.86
  4. Step 4: Simplify right side
    7,718.98x = 60,716,611.45
  5. Step 5: Solve for x
    x = 60,716,611.45/7,718.98
  6. Step 6: Final answer
    x = 7,865.89

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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.