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Finding the Fourth Proportional to 5,480.38, 7,569.21 and 3,994.93

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Solution

The fourth proportional to 5,480.38, 7,569.21 and 3,994.93 is: 5,517.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480.38 : 7,569.21 = 3,994.93 : x
  2. Step 2: Convert to fraction form
    5,480.38/7,569.21 = 3,994.93/x
  3. Step 3: Cross multiply
    5,480.38x = 7,569.21 × 3,994.93
  4. Step 4: Simplify right side
    5,480.38x = 30,238,464.11
  5. Step 5: Solve for x
    x = 30,238,464.11/5,480.38
  6. Step 6: Final answer
    x = 5,517.59

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1.5x scale

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.