Home / 5,149.79-7,106.72-2,791.93

Finding the Fourth Proportional to 5,149.79, 7,106.72 and 2,791.93

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Solution

The fourth proportional to 5,149.79, 7,106.72 and 2,791.93 is: 3,852.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.79 : 7,106.72 = 2,791.93 : x
  2. Step 2: Convert to fraction form
    5,149.79/7,106.72 = 2,791.93/x
  3. Step 3: Cross multiply
    5,149.79x = 7,106.72 × 2,791.93
  4. Step 4: Simplify right side
    5,149.79x = 19,841,464.77
  5. Step 5: Solve for x
    x = 19,841,464.77/5,149.79
  6. Step 6: Final answer
    x = 3,852.87

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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.