Home / 3,889.01-5,367.85-2,211.40

Finding the Fourth Proportional to 3,889.01, 5,367.85 and 2,211.40

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Solution

The fourth proportional to 3,889.01, 5,367.85 and 2,211.40 is: 3,052.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.01 : 5,367.85 = 2,211.40 : x
  2. Step 2: Convert to fraction form
    3,889.01/5,367.85 = 2,211.40/x
  3. Step 3: Cross multiply
    3,889.01x = 5,367.85 × 2,211.40
  4. Step 4: Simplify right side
    3,889.01x = 11,870,436.65
  5. Step 5: Solve for x
    x = 11,870,436.65/3,889.01
  6. Step 6: Final answer
    x = 3,052.31

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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.