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Finding the Fourth Proportional to 3,865.22, 5,333.61 and 2,186.65

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Solution

The fourth proportional to 3,865.22, 5,333.61 and 2,186.65 is: 3,017.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.22 : 5,333.61 = 2,186.65 : x
  2. Step 2: Convert to fraction form
    3,865.22/5,333.61 = 2,186.65/x
  3. Step 3: Cross multiply
    3,865.22x = 5,333.61 × 2,186.65
  4. Step 4: Simplify right side
    3,865.22x = 11,662,738.31
  5. Step 5: Solve for x
    x = 11,662,738.31/3,865.22
  6. Step 6: Final answer
    x = 3,017.35

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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.