Home / 3,054.75-4,215.65-1,728.43

Finding the Fourth Proportional to 3,054.75, 4,215.65 and 1,728.43

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Solution

The fourth proportional to 3,054.75, 4,215.65 and 1,728.43 is: 2,385.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,054.75 : 4,215.65 = 1,728.43 : x
  2. Step 2: Convert to fraction form
    3,054.75/4,215.65 = 1,728.43/x
  3. Step 3: Cross multiply
    3,054.75x = 4,215.65 × 1,728.43
  4. Step 4: Simplify right side
    3,054.75x = 7,286,455.93
  5. Step 5: Solve for x
    x = 7,286,455.93/3,054.75
  6. Step 6: Final answer
    x = 2,385.29

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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.