Home / 5,149.63-7,106.50-2,791.78

Finding the Fourth Proportional to 5,149.63, 7,106.50 and 2,791.78

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Solution

The fourth proportional to 5,149.63, 7,106.50 and 2,791.78 is: 3,852.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.63 : 7,106.50 = 2,791.78 : x
  2. Step 2: Convert to fraction form
    5,149.63/7,106.50 = 2,791.78/x
  3. Step 3: Cross multiply
    5,149.63x = 7,106.50 × 2,791.78
  4. Step 4: Simplify right side
    5,149.63x = 19,839,784.57
  5. Step 5: Solve for x
    x = 19,839,784.57/5,149.63
  6. Step 6: Final answer
    x = 3,852.66

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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.