Home / 1,764.21-2,434.11-1,390.03

Finding the Fourth Proportional to 1,764.21, 2,434.11 and 1,390.03

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Solution

The fourth proportional to 1,764.21, 2,434.11 and 1,390.03 is: 1,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764.21 : 2,434.11 = 1,390.03 : x
  2. Step 2: Convert to fraction form
    1,764.21/2,434.11 = 1,390.03/x
  3. Step 3: Cross multiply
    1,764.21x = 2,434.11 × 1,390.03
  4. Step 4: Simplify right side
    1,764.21x = 3,383,477.23
  5. Step 5: Solve for x
    x = 3,383,477.23/1,764.21
  6. Step 6: Final answer
    x = 1,917.85

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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.