Home / 1,721.57-2,579.60-1,104.77

Finding the Fourth Proportional to 1,721.57, 2,579.60 and 1,104.77

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Solution

The fourth proportional to 1,721.57, 2,579.60 and 1,104.77 is: 1,655.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.57 : 2,579.60 = 1,104.77 : x
  2. Step 2: Convert to fraction form
    1,721.57/2,579.60 = 1,104.77/x
  3. Step 3: Cross multiply
    1,721.57x = 2,579.60 × 1,104.77
  4. Step 4: Simplify right side
    1,721.57x = 2,849,846.27
  5. Step 5: Solve for x
    x = 2,849,846.27/1,721.57
  6. Step 6: Final answer
    x = 1,655.38

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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.