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Finding the Fourth Proportional to 2,618.58, 3,611.70 and 2,461.89

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Solution

The fourth proportional to 2,618.58, 3,611.70 and 2,461.89 is: 3,395.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.58 : 3,611.70 = 2,461.89 : x
  2. Step 2: Convert to fraction form
    2,618.58/3,611.70 = 2,461.89/x
  3. Step 3: Cross multiply
    2,618.58x = 3,611.70 × 2,461.89
  4. Step 4: Simplify right side
    2,618.58x = 8,891,608.11
  5. Step 5: Solve for x
    x = 8,891,608.11/2,618.58
  6. Step 6: Final answer
    x = 3,395.58

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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.