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Finding the Fourth Proportional to 8,571.04, 12,857.60 and 2,415.04

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Solution

The fourth proportional to 8,571.04, 12,857.60 and 2,415.04 is: 3,622.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.04 : 12,857.60 = 2,415.04 : x
  2. Step 2: Convert to fraction form
    8,571.04/12,857.60 = 2,415.04/x
  3. Step 3: Cross multiply
    8,571.04x = 12,857.60 × 2,415.04
  4. Step 4: Simplify right side
    8,571.04x = 31,051,618.30
  5. Step 5: Solve for x
    x = 31,051,618.30/8,571.04
  6. Step 6: Final answer
    x = 3,622.85

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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.