Home / 1,743.72-2,617.80-1,378.80

Finding the Fourth Proportional to 1,743.72, 2,617.80 and 1,378.80

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Solution

The fourth proportional to 1,743.72, 2,617.80 and 1,378.80 is: 2,069.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.72 : 2,617.80 = 1,378.80 : x
  2. Step 2: Convert to fraction form
    1,743.72/2,617.80 = 1,378.80/x
  3. Step 3: Cross multiply
    1,743.72x = 2,617.80 × 1,378.80
  4. Step 4: Simplify right side
    1,743.72x = 3,609,422.64
  5. Step 5: Solve for x
    x = 3,609,422.64/1,743.72
  6. Step 6: Final answer
    x = 2,069.96

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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.