Home / 2,469.20-3,407.49-1,421.26

Finding the Fourth Proportional to 2,469.20, 3,407.49 and 1,421.26

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Solution

The fourth proportional to 2,469.20, 3,407.49 and 1,421.26 is: 1,961.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,469.20 : 3,407.49 = 1,421.26 : x
  2. Step 2: Convert to fraction form
    2,469.20/3,407.49 = 1,421.26/x
  3. Step 3: Cross multiply
    2,469.20x = 3,407.49 × 1,421.26
  4. Step 4: Simplify right side
    2,469.20x = 4,842,920.72
  5. Step 5: Solve for x
    x = 4,842,920.72/2,469.20
  6. Step 6: Final answer
    x = 1,961.34

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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.