Home / 5,149.56-7,106.40-2,791.70

Finding the Fourth Proportional to 5,149.56, 7,106.40 and 2,791.70

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Solution

The fourth proportional to 5,149.56, 7,106.40 and 2,791.70 is: 3,852.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.56 : 7,106.40 = 2,791.70 : x
  2. Step 2: Convert to fraction form
    5,149.56/7,106.40 = 2,791.70/x
  3. Step 3: Cross multiply
    5,149.56x = 7,106.40 × 2,791.70
  4. Step 4: Simplify right side
    5,149.56x = 19,838,936.88
  5. Step 5: Solve for x
    x = 19,838,936.88/5,149.56
  6. Step 6: Final answer
    x = 3,852.55

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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.