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Finding the Fourth Proportional to 4,990.50, 7,484.00 and 2,217.06

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Solution

The fourth proportional to 4,990.50, 7,484.00 and 2,217.06 is: 3,324.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.50 : 7,484.00 = 2,217.06 : x
  2. Step 2: Convert to fraction form
    4,990.50/7,484.00 = 2,217.06/x
  3. Step 3: Cross multiply
    4,990.50x = 7,484.00 × 2,217.06
  4. Step 4: Simplify right side
    4,990.50x = 16,592,465.95
  5. Step 5: Solve for x
    x = 16,592,465.95/4,990.50
  6. Step 6: Final answer
    x = 3,324.81

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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.