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Finding the Fourth Proportional to 3,375.63, 5,062.76 and 909.89

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Solution

The fourth proportional to 3,375.63, 5,062.76 and 909.89 is: 1,364.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.63 : 5,062.76 = 909.89 : x
  2. Step 2: Convert to fraction form
    3,375.63/5,062.76 = 909.89/x
  3. Step 3: Cross multiply
    3,375.63x = 5,062.76 × 909.89
  4. Step 4: Simplify right side
    3,375.63x = 4,606,524.83
  5. Step 5: Solve for x
    x = 4,606,524.83/3,375.63
  6. Step 6: Final answer
    x = 1,364.64

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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.