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Finding the Fourth Proportional to 3,738.54, 5,607.04 and 1,398.12

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Solution

The fourth proportional to 3,738.54, 5,607.04 and 1,398.12 is: 2,096.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.54 : 5,607.04 = 1,398.12 : x
  2. Step 2: Convert to fraction form
    3,738.54/5,607.04 = 1,398.12/x
  3. Step 3: Cross multiply
    3,738.54x = 5,607.04 × 1,398.12
  4. Step 4: Simplify right side
    3,738.54x = 7,839,314.76
  5. Step 5: Solve for x
    x = 7,839,314.76/3,738.54
  6. Step 6: Final answer
    x = 2,096.89

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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.