Home / 3,311.70-4,968.90-1,668.72

Finding the Fourth Proportional to 3,311.70, 4,968.90 and 1,668.72

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Solution

The fourth proportional to 3,311.70, 4,968.90 and 1,668.72 is: 2,503.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.70 : 4,968.90 = 1,668.72 : x
  2. Step 2: Convert to fraction form
    3,311.70/4,968.90 = 1,668.72/x
  3. Step 3: Cross multiply
    3,311.70x = 4,968.90 × 1,668.72
  4. Step 4: Simplify right side
    3,311.70x = 8,291,702.81
  5. Step 5: Solve for x
    x = 8,291,702.81/3,311.70
  6. Step 6: Final answer
    x = 2,503.76

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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.