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Finding the Fourth Proportional to 3,611.04, 5,390.42 and 3,340.50

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Solution

The fourth proportional to 3,611.04, 5,390.42 and 3,340.50 is: 4,986.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.04 : 5,390.42 = 3,340.50 : x
  2. Step 2: Convert to fraction form
    3,611.04/5,390.42 = 3,340.50/x
  3. Step 3: Cross multiply
    3,611.04x = 5,390.42 × 3,340.50
  4. Step 4: Simplify right side
    3,611.04x = 18,006,681.31
  5. Step 5: Solve for x
    x = 18,006,681.31/3,611.04
  6. Step 6: Final answer
    x = 4,986.56

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.