Home / 3,890.20-5,834.65-1,669.39

Finding the Fourth Proportional to 3,890.20, 5,834.65 and 1,669.39

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Solution

The fourth proportional to 3,890.20, 5,834.65 and 1,669.39 is: 2,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.20 : 5,834.65 = 1,669.39 : x
  2. Step 2: Convert to fraction form
    3,890.20/5,834.65 = 1,669.39/x
  3. Step 3: Cross multiply
    3,890.20x = 5,834.65 × 1,669.39
  4. Step 4: Simplify right side
    3,890.20x = 9,740,268.84
  5. Step 5: Solve for x
    x = 9,740,268.84/3,890.20
  6. Step 6: Final answer
    x = 2,503.80

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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.