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Finding the Fourth Proportional to 8,857.85, 12,225.02 and 5,723.15

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Solution

The fourth proportional to 8,857.85, 12,225.02 and 5,723.15 is: 7,898.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.85 : 12,225.02 = 5,723.15 : x
  2. Step 2: Convert to fraction form
    8,857.85/12,225.02 = 5,723.15/x
  3. Step 3: Cross multiply
    8,857.85x = 12,225.02 × 5,723.15
  4. Step 4: Simplify right side
    8,857.85x = 69,965,533.47
  5. Step 5: Solve for x
    x = 69,965,533.47/8,857.85
  6. Step 6: Final answer
    x = 7,898.71

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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.