Home / 5,211.36-7,191.72-2,853.54

Finding the Fourth Proportional to 5,211.36, 7,191.72 and 2,853.54

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Solution

The fourth proportional to 5,211.36, 7,191.72 and 2,853.54 is: 3,937.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.36 : 7,191.72 = 2,853.54 : x
  2. Step 2: Convert to fraction form
    5,211.36/7,191.72 = 2,853.54/x
  3. Step 3: Cross multiply
    5,211.36x = 7,191.72 × 2,853.54
  4. Step 4: Simplify right side
    5,211.36x = 20,521,860.69
  5. Step 5: Solve for x
    x = 20,521,860.69/5,211.36
  6. Step 6: Final answer
    x = 3,937.91

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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.