Home / 1,764.85-2,432.67-1,391.21

Finding the Fourth Proportional to 1,764.85, 2,432.67 and 1,391.21

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Solution

The fourth proportional to 1,764.85, 2,432.67 and 1,391.21 is: 1,917.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764.85 : 2,432.67 = 1,391.21 : x
  2. Step 2: Convert to fraction form
    1,764.85/2,432.67 = 1,391.21/x
  3. Step 3: Cross multiply
    1,764.85x = 2,432.67 × 1,391.21
  4. Step 4: Simplify right side
    1,764.85x = 3,384,354.83
  5. Step 5: Solve for x
    x = 3,384,354.83/1,764.85
  6. Step 6: Final answer
    x = 1,917.64

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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.