Home / 1,619.33-2,234.65-911.15

Finding the Fourth Proportional to 1,619.33, 2,234.65 and 911.15

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Solution

The fourth proportional to 1,619.33, 2,234.65 and 911.15 is: 1,257.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.33 : 2,234.65 = 911.15 : x
  2. Step 2: Convert to fraction form
    1,619.33/2,234.65 = 911.15/x
  3. Step 3: Cross multiply
    1,619.33x = 2,234.65 × 911.15
  4. Step 4: Simplify right side
    1,619.33x = 2,036,101.35
  5. Step 5: Solve for x
    x = 2,036,101.35/1,619.33
  6. Step 6: Final answer
    x = 1,257.37

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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.