Home / 3,431.70-4,735.58-1,919.34

Finding the Fourth Proportional to 3,431.70, 4,735.58 and 1,919.34

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Solution

The fourth proportional to 3,431.70, 4,735.58 and 1,919.34 is: 2,648.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.70 : 4,735.58 = 1,919.34 : x
  2. Step 2: Convert to fraction form
    3,431.70/4,735.58 = 1,919.34/x
  3. Step 3: Cross multiply
    3,431.70x = 4,735.58 × 1,919.34
  4. Step 4: Simplify right side
    3,431.70x = 9,089,178.52
  5. Step 5: Solve for x
    x = 9,089,178.52/3,431.70
  6. Step 6: Final answer
    x = 2,648.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.