Home / 3,054.81-4,215.74-1,728.49

Finding the Fourth Proportional to 3,054.81, 4,215.74 and 1,728.49

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Solution

The fourth proportional to 3,054.81, 4,215.74 and 1,728.49 is: 2,385.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,054.81 : 4,215.74 = 1,728.49 : x
  2. Step 2: Convert to fraction form
    3,054.81/4,215.74 = 1,728.49/x
  3. Step 3: Cross multiply
    3,054.81x = 4,215.74 × 1,728.49
  4. Step 4: Simplify right side
    3,054.81x = 7,286,855.79
  5. Step 5: Solve for x
    x = 7,286,855.79/3,054.81
  6. Step 6: Final answer
    x = 2,385.37

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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.