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Finding the Fourth Proportional to 3,054.68, 4,215.40 and 1,728.36

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Solution

The fourth proportional to 3,054.68, 4,215.40 and 1,728.36 is: 2,385.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,054.68 : 4,215.40 = 1,728.36 : x
  2. Step 2: Convert to fraction form
    3,054.68/4,215.40 = 1,728.36/x
  3. Step 3: Cross multiply
    3,054.68x = 4,215.40 × 1,728.36
  4. Step 4: Simplify right side
    3,054.68x = 7,285,728.74
  5. Step 5: Solve for x
    x = 7,285,728.74/3,054.68
  6. Step 6: Final answer
    x = 2,385.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.