Home / 8,861.28-13,317.84-8,217.60

Finding the Fourth Proportional to 8,861.28, 13,317.84 and 8,217.60

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Solution

The fourth proportional to 8,861.28, 13,317.84 and 8,217.60 is: 12,350.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.28 : 13,317.84 = 8,217.60 : x
  2. Step 2: Convert to fraction form
    8,861.28/13,317.84 = 8,217.60/x
  3. Step 3: Cross multiply
    8,861.28x = 13,317.84 × 8,217.60
  4. Step 4: Simplify right side
    8,861.28x = 109,440,681.98
  5. Step 5: Solve for x
    x = 109,440,681.98/8,861.28
  6. Step 6: Final answer
    x = 12,350.44

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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.