Home / 1,720.37-2,578.23-1,103.76

Finding the Fourth Proportional to 1,720.37, 2,578.23 and 1,103.76

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Solution

The fourth proportional to 1,720.37, 2,578.23 and 1,103.76 is: 1,654.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.37 : 2,578.23 = 1,103.76 : x
  2. Step 2: Convert to fraction form
    1,720.37/2,578.23 = 1,103.76/x
  3. Step 3: Cross multiply
    1,720.37x = 2,578.23 × 1,103.76
  4. Step 4: Simplify right side
    1,720.37x = 2,845,747.14
  5. Step 5: Solve for x
    x = 2,845,747.14/1,720.37
  6. Step 6: Final answer
    x = 1,654.15

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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.