Home / 3,409.70-5,118.60-1,930.10

Finding the Fourth Proportional to 3,409.70, 5,118.60 and 1,930.10

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Solution

The fourth proportional to 3,409.70, 5,118.60 and 1,930.10 is: 2,897.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.70 : 5,118.60 = 1,930.10 : x
  2. Step 2: Convert to fraction form
    3,409.70/5,118.60 = 1,930.10/x
  3. Step 3: Cross multiply
    3,409.70x = 5,118.60 × 1,930.10
  4. Step 4: Simplify right side
    3,409.70x = 9,879,409.86
  5. Step 5: Solve for x
    x = 9,879,409.86/3,409.70
  6. Step 6: Final answer
    x = 2,897.44

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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.