Home / 3,147.20-4,719.45-1,586.60

Finding the Fourth Proportional to 3,147.20, 4,719.45 and 1,586.60

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Solution

The fourth proportional to 3,147.20, 4,719.45 and 1,586.60 is: 2,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.20 : 4,719.45 = 1,586.60 : x
  2. Step 2: Convert to fraction form
    3,147.20/4,719.45 = 1,586.60/x
  3. Step 3: Cross multiply
    3,147.20x = 4,719.45 × 1,586.60
  4. Step 4: Simplify right side
    3,147.20x = 7,487,879.37
  5. Step 5: Solve for x
    x = 7,487,879.37/3,147.20
  6. Step 6: Final answer
    x = 2,379.22

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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.