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Finding the Fourth Proportional to 2,398.78, 3,598.44 and 755.56

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Solution

The fourth proportional to 2,398.78, 3,598.44 and 755.56 is: 1,133.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,398.78 : 3,598.44 = 755.56 : x
  2. Step 2: Convert to fraction form
    2,398.78/3,598.44 = 755.56/x
  3. Step 3: Cross multiply
    2,398.78x = 3,598.44 × 755.56
  4. Step 4: Simplify right side
    2,398.78x = 2,718,837.33
  5. Step 5: Solve for x
    x = 2,718,837.33/2,398.78
  6. Step 6: Final answer
    x = 1,133.43

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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.