Home / 3,679.20-5,518.80-1,487.93

Finding the Fourth Proportional to 3,679.20, 5,518.80 and 1,487.93

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Solution

The fourth proportional to 3,679.20, 5,518.80 and 1,487.93 is: 2,231.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.20 : 5,518.80 = 1,487.93 : x
  2. Step 2: Convert to fraction form
    3,679.20/5,518.80 = 1,487.93/x
  3. Step 3: Cross multiply
    3,679.20x = 5,518.80 × 1,487.93
  4. Step 4: Simplify right side
    3,679.20x = 8,211,588.08
  5. Step 5: Solve for x
    x = 8,211,588.08/3,679.20
  6. Step 6: Final answer
    x = 2,231.90

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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.