Home / 2,467.80-3,399.75-1,720.40

Finding the Fourth Proportional to 2,467.80, 3,399.75 and 1,720.40

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Solution

The fourth proportional to 2,467.80, 3,399.75 and 1,720.40 is: 2,370.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,467.80 : 3,399.75 = 1,720.40 : x
  2. Step 2: Convert to fraction form
    2,467.80/3,399.75 = 1,720.40/x
  3. Step 3: Cross multiply
    2,467.80x = 3,399.75 × 1,720.40
  4. Step 4: Simplify right side
    2,467.80x = 5,848,912.90
  5. Step 5: Solve for x
    x = 5,848,912.90/2,467.80
  6. Step 6: Final answer
    x = 2,370.09

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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.