Home / 3,759.60-5,638.74-1,419.81

Finding the Fourth Proportional to 3,759.60, 5,638.74 and 1,419.81

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Solution

The fourth proportional to 3,759.60, 5,638.74 and 1,419.81 is: 2,129.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.60 : 5,638.74 = 1,419.81 : x
  2. Step 2: Convert to fraction form
    3,759.60/5,638.74 = 1,419.81/x
  3. Step 3: Cross multiply
    3,759.60x = 5,638.74 × 1,419.81
  4. Step 4: Simplify right side
    3,759.60x = 8,005,939.44
  5. Step 5: Solve for x
    x = 8,005,939.44/3,759.60
  6. Step 6: Final answer
    x = 2,129.47

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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.