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Finding the Fourth Proportional to 4,858.90, 7,291.90 and 1,938.04

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Solution

The fourth proportional to 4,858.90, 7,291.90 and 1,938.04 is: 2,908.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,858.90 : 7,291.90 = 1,938.04 : x
  2. Step 2: Convert to fraction form
    4,858.90/7,291.90 = 1,938.04/x
  3. Step 3: Cross multiply
    4,858.90x = 7,291.90 × 1,938.04
  4. Step 4: Simplify right side
    4,858.90x = 14,131,993.88
  5. Step 5: Solve for x
    x = 14,131,993.88/4,858.90
  6. Step 6: Final answer
    x = 2,908.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.