Home / 2,438.99-3,367.43-1,643.20

Finding the Fourth Proportional to 2,438.99, 3,367.43 and 1,643.20

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Solution

The fourth proportional to 2,438.99, 3,367.43 and 1,643.20 is: 2,268.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.99 : 3,367.43 = 1,643.20 : x
  2. Step 2: Convert to fraction form
    2,438.99/3,367.43 = 1,643.20/x
  3. Step 3: Cross multiply
    2,438.99x = 3,367.43 × 1,643.20
  4. Step 4: Simplify right side
    2,438.99x = 5,533,360.98
  5. Step 5: Solve for x
    x = 5,533,360.98/2,438.99
  6. Step 6: Final answer
    x = 2,268.71

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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.