Home / 3,679.16-5,518.60-1,487.90

Finding the Fourth Proportional to 3,679.16, 5,518.60 and 1,487.90

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Solution

The fourth proportional to 3,679.16, 5,518.60 and 1,487.90 is: 2,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.16 : 5,518.60 = 1,487.90 : x
  2. Step 2: Convert to fraction form
    3,679.16/5,518.60 = 1,487.90/x
  3. Step 3: Cross multiply
    3,679.16x = 5,518.60 × 1,487.90
  4. Step 4: Simplify right side
    3,679.16x = 8,211,135.02
  5. Step 5: Solve for x
    x = 8,211,135.02/3,679.16
  6. Step 6: Final answer
    x = 2,231.80

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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.