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Finding the Fourth Proportional to 7,407.78, 11,113.11 and 2,213.70

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Solution

The fourth proportional to 7,407.78, 11,113.11 and 2,213.70 is: 3,320.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,407.78 : 11,113.11 = 2,213.70 : x
  2. Step 2: Convert to fraction form
    7,407.78/11,113.11 = 2,213.70/x
  3. Step 3: Cross multiply
    7,407.78x = 11,113.11 × 2,213.70
  4. Step 4: Simplify right side
    7,407.78x = 24,601,091.61
  5. Step 5: Solve for x
    x = 24,601,091.61/7,407.78
  6. Step 6: Final answer
    x = 3,320.98

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.