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Finding the Fourth Proportional to 3,506.67, 5,260 and 909.61

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Solution

The fourth proportional to 3,506.67, 5,260 and 909.61 is: 1,364.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,506.67 : 5,260 = 909.61 : x
  2. Step 2: Convert to fraction form
    3,506.67/5,260 = 909.61/x
  3. Step 3: Cross multiply
    3,506.67x = 5,260 × 909.61
  4. Step 4: Simplify right side
    3,506.67x = 4,784,548.60
  5. Step 5: Solve for x
    x = 4,784,548.60/3,506.67
  6. Step 6: Final answer
    x = 1,364.41

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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.