Home / 2,206.64-3,309.09-890.36

Finding the Fourth Proportional to 2,206.64, 3,309.09 and 890.36

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Solution

The fourth proportional to 2,206.64, 3,309.09 and 890.36 is: 1,335.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.64 : 3,309.09 = 890.36 : x
  2. Step 2: Convert to fraction form
    2,206.64/3,309.09 = 890.36/x
  3. Step 3: Cross multiply
    2,206.64x = 3,309.09 × 890.36
  4. Step 4: Simplify right side
    2,206.64x = 2,946,273.90
  5. Step 5: Solve for x
    x = 2,946,273.90/2,206.64
  6. Step 6: Final answer
    x = 1,335.18

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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.