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Finding the Fourth Proportional to 5,718.69, 8,578.89 and 3,529.80

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Solution

The fourth proportional to 5,718.69, 8,578.89 and 3,529.80 is: 5,295.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.69 : 8,578.89 = 3,529.80 : x
  2. Step 2: Convert to fraction form
    5,718.69/8,578.89 = 3,529.80/x
  3. Step 3: Cross multiply
    5,718.69x = 8,578.89 × 3,529.80
  4. Step 4: Simplify right side
    5,718.69x = 30,281,765.92
  5. Step 5: Solve for x
    x = 30,281,765.92/5,718.69
  6. Step 6: Final answer
    x = 5,295.23

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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.