Home / 2,782.70-4,173.37-933.78

Finding the Fourth Proportional to 2,782.70, 4,173.37 and 933.78

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Solution

The fourth proportional to 2,782.70, 4,173.37 and 933.78 is: 1,400.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.70 : 4,173.37 = 933.78 : x
  2. Step 2: Convert to fraction form
    2,782.70/4,173.37 = 933.78/x
  3. Step 3: Cross multiply
    2,782.70x = 4,173.37 × 933.78
  4. Step 4: Simplify right side
    2,782.70x = 3,896,993.20
  5. Step 5: Solve for x
    x = 3,896,993.20/2,782.70
  6. Step 6: Final answer
    x = 1,400.43

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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.