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Finding the Fourth Proportional to 5,415.94, 7,474.32 and 3,058.30

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Solution

The fourth proportional to 5,415.94, 7,474.32 and 3,058.30 is: 4,220.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.94 : 7,474.32 = 3,058.30 : x
  2. Step 2: Convert to fraction form
    5,415.94/7,474.32 = 3,058.30/x
  3. Step 3: Cross multiply
    5,415.94x = 7,474.32 × 3,058.30
  4. Step 4: Simplify right side
    5,415.94x = 22,858,712.86
  5. Step 5: Solve for x
    x = 22,858,712.86/5,415.94
  6. Step 6: Final answer
    x = 4,220.64

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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.