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Finding the Fourth Proportional to 7,903.88, 11,855.85 and 3,222.63

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Solution

The fourth proportional to 7,903.88, 11,855.85 and 3,222.63 is: 4,833.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.88 : 11,855.85 = 3,222.63 : x
  2. Step 2: Convert to fraction form
    7,903.88/11,855.85 = 3,222.63/x
  3. Step 3: Cross multiply
    7,903.88x = 11,855.85 × 3,222.63
  4. Step 4: Simplify right side
    7,903.88x = 38,207,001.77
  5. Step 5: Solve for x
    x = 38,207,001.77/7,903.88
  6. Step 6: Final answer
    x = 4,833.96

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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.