Home / 1,728.51-2,380.50-1,617.33

Finding the Fourth Proportional to 1,728.51, 2,380.50 and 1,617.33

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Solution

The fourth proportional to 1,728.51, 2,380.50 and 1,617.33 is: 2,227.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.51 : 2,380.50 = 1,617.33 : x
  2. Step 2: Convert to fraction form
    1,728.51/2,380.50 = 1,617.33/x
  3. Step 3: Cross multiply
    1,728.51x = 2,380.50 × 1,617.33
  4. Step 4: Simplify right side
    1,728.51x = 3,850,054.07
  5. Step 5: Solve for x
    x = 3,850,054.07/1,728.51
  6. Step 6: Final answer
    x = 2,227.38

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1.5x scale

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.