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Finding the Fourth Proportional to 3,718.81, 5,579.06 and 2,160.11

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Solution

The fourth proportional to 3,718.81, 5,579.06 and 2,160.11 is: 3,240.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.81 : 5,579.06 = 2,160.11 : x
  2. Step 2: Convert to fraction form
    3,718.81/5,579.06 = 2,160.11/x
  3. Step 3: Cross multiply
    3,718.81x = 5,579.06 × 2,160.11
  4. Step 4: Simplify right side
    3,718.81x = 12,051,372.50
  5. Step 5: Solve for x
    x = 12,051,372.50/3,718.81
  6. Step 6: Final answer
    x = 3,240.66

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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.