Home / 1,640.18-2,456.37-1,249.70

Finding the Fourth Proportional to 1,640.18, 2,456.37 and 1,249.70

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Solution

The fourth proportional to 1,640.18, 2,456.37 and 1,249.70 is: 1,871.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.18 : 2,456.37 = 1,249.70 : x
  2. Step 2: Convert to fraction form
    1,640.18/2,456.37 = 1,249.70/x
  3. Step 3: Cross multiply
    1,640.18x = 2,456.37 × 1,249.70
  4. Step 4: Simplify right side
    1,640.18x = 3,069,713.31
  5. Step 5: Solve for x
    x = 3,069,713.31/1,640.18
  6. Step 6: Final answer
    x = 1,871.57

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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.