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Finding the Fourth Proportional to 6,215.73, 8,578.88 and 3,564.87

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Solution

The fourth proportional to 6,215.73, 8,578.88 and 3,564.87 is: 4,920.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,215.73 : 8,578.88 = 3,564.87 : x
  2. Step 2: Convert to fraction form
    6,215.73/8,578.88 = 3,564.87/x
  3. Step 3: Cross multiply
    6,215.73x = 8,578.88 × 3,564.87
  4. Step 4: Simplify right side
    6,215.73x = 30,582,591.95
  5. Step 5: Solve for x
    x = 30,582,591.95/6,215.73
  6. Step 6: Final answer
    x = 4,920.19

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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.