Home / 1,648.41-2,274.62-985.11

Finding the Fourth Proportional to 1,648.41, 2,274.62 and 985.11

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Solution

The fourth proportional to 1,648.41, 2,274.62 and 985.11 is: 1,359.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,648.41 : 2,274.62 = 985.11 : x
  2. Step 2: Convert to fraction form
    1,648.41/2,274.62 = 985.11/x
  3. Step 3: Cross multiply
    1,648.41x = 2,274.62 × 985.11
  4. Step 4: Simplify right side
    1,648.41x = 2,240,745.98
  5. Step 5: Solve for x
    x = 2,240,745.98/1,648.41
  6. Step 6: Final answer
    x = 1,359.34

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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.