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Finding the Fourth Proportional to 3,521.87, 4,860.02 and 1,928.49

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Solution

The fourth proportional to 3,521.87, 4,860.02 and 1,928.49 is: 2,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.87 : 4,860.02 = 1,928.49 : x
  2. Step 2: Convert to fraction form
    3,521.87/4,860.02 = 1,928.49/x
  3. Step 3: Cross multiply
    3,521.87x = 4,860.02 × 1,928.49
  4. Step 4: Simplify right side
    3,521.87x = 9,372,490.33
  5. Step 5: Solve for x
    x = 9,372,490.33/3,521.87
  6. Step 6: Final answer
    x = 2,661.23

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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.