Home / 2,169.24-2,990.62-1,469.40

Finding the Fourth Proportional to 2,169.24, 2,990.62 and 1,469.40

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Solution

The fourth proportional to 2,169.24, 2,990.62 and 1,469.40 is: 2,025.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.24 : 2,990.62 = 1,469.40 : x
  2. Step 2: Convert to fraction form
    2,169.24/2,990.62 = 1,469.40/x
  3. Step 3: Cross multiply
    2,169.24x = 2,990.62 × 1,469.40
  4. Step 4: Simplify right side
    2,169.24x = 4,394,417.03
  5. Step 5: Solve for x
    x = 4,394,417.03/2,169.24
  6. Step 6: Final answer
    x = 2,025.79

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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.