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Finding the Fourth Proportional to 4,998.34, 7,490.21 and 2,811.34

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Solution

The fourth proportional to 4,998.34, 7,490.21 and 2,811.34 is: 4,212.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,998.34 : 7,490.21 = 2,811.34 : x
  2. Step 2: Convert to fraction form
    4,998.34/7,490.21 = 2,811.34/x
  3. Step 3: Cross multiply
    4,998.34x = 7,490.21 × 2,811.34
  4. Step 4: Simplify right side
    4,998.34x = 21,057,489.53
  5. Step 5: Solve for x
    x = 21,057,489.53/4,998.34
  6. Step 6: Final answer
    x = 4,212.90

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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.