Home / 3,679.55-5,518.15-1,213.91

Finding the Fourth Proportional to 3,679.55, 5,518.15 and 1,213.91

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Solution

The fourth proportional to 3,679.55, 5,518.15 and 1,213.91 is: 1,820.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.55 : 5,518.15 = 1,213.91 : x
  2. Step 2: Convert to fraction form
    3,679.55/5,518.15 = 1,213.91/x
  3. Step 3: Cross multiply
    3,679.55x = 5,518.15 × 1,213.91
  4. Step 4: Simplify right side
    3,679.55x = 6,698,506.84
  5. Step 5: Solve for x
    x = 6,698,506.84/3,679.55
  6. Step 6: Final answer
    x = 1,820.47

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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.