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Finding the Fourth Proportional to 8,578.54, 12,860.94 and 5,635.30

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Solution

The fourth proportional to 8,578.54, 12,860.94 and 5,635.30 is: 8,448.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578.54 : 12,860.94 = 5,635.30 : x
  2. Step 2: Convert to fraction form
    8,578.54/12,860.94 = 5,635.30/x
  3. Step 3: Cross multiply
    8,578.54x = 12,860.94 × 5,635.30
  4. Step 4: Simplify right side
    8,578.54x = 72,475,255.18
  5. Step 5: Solve for x
    x = 72,475,255.18/8,578.54
  6. Step 6: Final answer
    x = 8,448.44

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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.