Home / 1,728.20-2,383.70-1,064.84

Finding the Fourth Proportional to 1,728.20, 2,383.70 and 1,064.84

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Solution

The fourth proportional to 1,728.20, 2,383.70 and 1,064.84 is: 1,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.20 : 2,383.70 = 1,064.84 : x
  2. Step 2: Convert to fraction form
    1,728.20/2,383.70 = 1,064.84/x
  3. Step 3: Cross multiply
    1,728.20x = 2,383.70 × 1,064.84
  4. Step 4: Simplify right side
    1,728.20x = 2,538,259.11
  5. Step 5: Solve for x
    x = 2,538,259.11/1,728.20
  6. Step 6: Final answer
    x = 1,468.73

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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.