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Finding the Fourth Proportional to 2,398.88, 3,598.01 and 939.07

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Solution

The fourth proportional to 2,398.88, 3,598.01 and 939.07 is: 1,408.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,398.88 : 3,598.01 = 939.07 : x
  2. Step 2: Convert to fraction form
    2,398.88/3,598.01 = 939.07/x
  3. Step 3: Cross multiply
    2,398.88x = 3,598.01 × 939.07
  4. Step 4: Simplify right side
    2,398.88x = 3,378,760.57
  5. Step 5: Solve for x
    x = 3,378,760.57/2,398.88
  6. Step 6: Final answer
    x = 1,408.47

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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.