Home / 1,396.29-2,096.36-905.77

Finding the Fourth Proportional to 1,396.29, 2,096.36 and 905.77

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Solution

The fourth proportional to 1,396.29, 2,096.36 and 905.77 is: 1,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.29 : 2,096.36 = 905.77 : x
  2. Step 2: Convert to fraction form
    1,396.29/2,096.36 = 905.77/x
  3. Step 3: Cross multiply
    1,396.29x = 2,096.36 × 905.77
  4. Step 4: Simplify right side
    1,396.29x = 1,898,820.00
  5. Step 5: Solve for x
    x = 1,898,820.00/1,396.29
  6. Step 6: Final answer
    x = 1,359.90

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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.