Home / 1,728.45-2,589.33-1,338.23

Finding the Fourth Proportional to 1,728.45, 2,589.33 and 1,338.23

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Solution

The fourth proportional to 1,728.45, 2,589.33 and 1,338.23 is: 2,004.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.45 : 2,589.33 = 1,338.23 : x
  2. Step 2: Convert to fraction form
    1,728.45/2,589.33 = 1,338.23/x
  3. Step 3: Cross multiply
    1,728.45x = 2,589.33 × 1,338.23
  4. Step 4: Simplify right side
    1,728.45x = 3,465,130.58
  5. Step 5: Solve for x
    x = 3,465,130.58/1,728.45
  6. Step 6: Final answer
    x = 2,004.76

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1.5x scale

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.