Home / 1,727.11-2,385.62-1,205.47

Finding the Fourth Proportional to 1,727.11, 2,385.62 and 1,205.47

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Solution

The fourth proportional to 1,727.11, 2,385.62 and 1,205.47 is: 1,665.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.11 : 2,385.62 = 1,205.47 : x
  2. Step 2: Convert to fraction form
    1,727.11/2,385.62 = 1,205.47/x
  3. Step 3: Cross multiply
    1,727.11x = 2,385.62 × 1,205.47
  4. Step 4: Simplify right side
    1,727.11x = 2,875,793.34
  5. Step 5: Solve for x
    x = 2,875,793.34/1,727.11
  6. Step 6: Final answer
    x = 1,665.09

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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.