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Finding the Fourth Proportional to 3,788.39, 5,224.01 and 2,990.39

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Solution

The fourth proportional to 3,788.39, 5,224.01 and 2,990.39 is: 4,123.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.39 : 5,224.01 = 2,990.39 : x
  2. Step 2: Convert to fraction form
    3,788.39/5,224.01 = 2,990.39/x
  3. Step 3: Cross multiply
    3,788.39x = 5,224.01 × 2,990.39
  4. Step 4: Simplify right side
    3,788.39x = 15,621,786.19
  5. Step 5: Solve for x
    x = 15,621,786.19/3,788.39
  6. Step 6: Final answer
    x = 4,123.59

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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.