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Finding the Fourth Proportional to 3,661.07, 5,047 and 2,611.31

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Solution

The fourth proportional to 3,661.07, 5,047 and 2,611.31 is: 3,599.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,661.07 : 5,047 = 2,611.31 : x
  2. Step 2: Convert to fraction form
    3,661.07/5,047 = 2,611.31/x
  3. Step 3: Cross multiply
    3,661.07x = 5,047 × 2,611.31
  4. Step 4: Simplify right side
    3,661.07x = 13,179,281.57
  5. Step 5: Solve for x
    x = 13,179,281.57/3,661.07
  6. Step 6: Final answer
    x = 3,599.84

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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.