Home / 5,149.55-7,106.39-2,791.67

Finding the Fourth Proportional to 5,149.55, 7,106.39 and 2,791.67

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Solution

The fourth proportional to 5,149.55, 7,106.39 and 2,791.67 is: 3,852.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.55 : 7,106.39 = 2,791.67 : x
  2. Step 2: Convert to fraction form
    5,149.55/7,106.39 = 2,791.67/x
  3. Step 3: Cross multiply
    5,149.55x = 7,106.39 × 2,791.67
  4. Step 4: Simplify right side
    5,149.55x = 19,838,681.81
  5. Step 5: Solve for x
    x = 19,838,681.81/5,149.55
  6. Step 6: Final answer
    x = 3,852.51

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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.