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Finding the Fourth Proportional to 4,791.79, 7,191.24 and 1,870.03

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Solution

The fourth proportional to 4,791.79, 7,191.24 and 1,870.03 is: 2,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,791.79 : 7,191.24 = 1,870.03 : x
  2. Step 2: Convert to fraction form
    4,791.79/7,191.24 = 1,870.03/x
  3. Step 3: Cross multiply
    4,791.79x = 7,191.24 × 1,870.03
  4. Step 4: Simplify right side
    4,791.79x = 13,447,834.54
  5. Step 5: Solve for x
    x = 13,447,834.54/4,791.79
  6. Step 6: Final answer
    x = 2,806.43

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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.