Home / 3,211.03-4,807.85-1,668.79

Finding the Fourth Proportional to 3,211.03, 4,807.85 and 1,668.79

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Solution

The fourth proportional to 3,211.03, 4,807.85 and 1,668.79 is: 2,498.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.03 : 4,807.85 = 1,668.79 : x
  2. Step 2: Convert to fraction form
    3,211.03/4,807.85 = 1,668.79/x
  3. Step 3: Cross multiply
    3,211.03x = 4,807.85 × 1,668.79
  4. Step 4: Simplify right side
    3,211.03x = 8,023,259.62
  5. Step 5: Solve for x
    x = 8,023,259.62/3,211.03
  6. Step 6: Final answer
    x = 2,498.66

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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.