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Finding the Fourth Proportional to 3,914.78, 5,866.97 and 2,160.18

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Solution

The fourth proportional to 3,914.78, 5,866.97 and 2,160.18 is: 3,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.78 : 5,866.97 = 2,160.18 : x
  2. Step 2: Convert to fraction form
    3,914.78/5,866.97 = 2,160.18/x
  3. Step 3: Cross multiply
    3,914.78x = 5,866.97 × 2,160.18
  4. Step 4: Simplify right side
    3,914.78x = 12,673,700.45
  5. Step 5: Solve for x
    x = 12,673,700.45/3,914.78
  6. Step 6: Final answer
    x = 3,237.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.