Home / 1,728.68-2,589.78-1,346.36

Finding the Fourth Proportional to 1,728.68, 2,589.78 and 1,346.36

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Solution

The fourth proportional to 1,728.68, 2,589.78 and 1,346.36 is: 2,017.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.68 : 2,589.78 = 1,346.36 : x
  2. Step 2: Convert to fraction form
    1,728.68/2,589.78 = 1,346.36/x
  3. Step 3: Cross multiply
    1,728.68x = 2,589.78 × 1,346.36
  4. Step 4: Simplify right side
    1,728.68x = 3,486,776.20
  5. Step 5: Solve for x
    x = 3,486,776.20/1,728.68
  6. Step 6: Final answer
    x = 2,017.02

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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.