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Finding the Fourth Proportional to 7,537.55, 11,306.86 and 1,990.84

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Solution

The fourth proportional to 7,537.55, 11,306.86 and 1,990.84 is: 2,986.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,537.55 : 11,306.86 = 1,990.84 : x
  2. Step 2: Convert to fraction form
    7,537.55/11,306.86 = 1,990.84/x
  3. Step 3: Cross multiply
    7,537.55x = 11,306.86 × 1,990.84
  4. Step 4: Simplify right side
    7,537.55x = 22,510,113.72
  5. Step 5: Solve for x
    x = 22,510,113.72/7,537.55
  6. Step 6: Final answer
    x = 2,986.40

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