Home / 1,763.40-2,640.78-1,370.46

Finding the Fourth Proportional to 1,763.40, 2,640.78 and 1,370.46

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Solution

The fourth proportional to 1,763.40, 2,640.78 and 1,370.46 is: 2,052.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.40 : 2,640.78 = 1,370.46 : x
  2. Step 2: Convert to fraction form
    1,763.40/2,640.78 = 1,370.46/x
  3. Step 3: Cross multiply
    1,763.40x = 2,640.78 × 1,370.46
  4. Step 4: Simplify right side
    1,763.40x = 3,619,083.36
  5. Step 5: Solve for x
    x = 3,619,083.36/1,763.40
  6. Step 6: Final answer
    x = 2,052.33

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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.