Home / 3,759.40-5,642.70-1,912.60

Finding the Fourth Proportional to 3,759.40, 5,642.70 and 1,912.60

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Solution

The fourth proportional to 3,759.40, 5,642.70 and 1,912.60 is: 2,870.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.40 : 5,642.70 = 1,912.60 : x
  2. Step 2: Convert to fraction form
    3,759.40/5,642.70 = 1,912.60/x
  3. Step 3: Cross multiply
    3,759.40x = 5,642.70 × 1,912.60
  4. Step 4: Simplify right side
    3,759.40x = 10,792,228.02
  5. Step 5: Solve for x
    x = 10,792,228.02/3,759.40
  6. Step 6: Final answer
    x = 2,870.73

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1.5x scale

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.