Home / 1,619.64-2,234.88-911.52

Finding the Fourth Proportional to 1,619.64, 2,234.88 and 911.52

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Solution

The fourth proportional to 1,619.64, 2,234.88 and 911.52 is: 1,257.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.64 : 2,234.88 = 911.52 : x
  2. Step 2: Convert to fraction form
    1,619.64/2,234.88 = 911.52/x
  3. Step 3: Cross multiply
    1,619.64x = 2,234.88 × 911.52
  4. Step 4: Simplify right side
    1,619.64x = 2,037,137.82
  5. Step 5: Solve for x
    x = 2,037,137.82/1,619.64
  6. Step 6: Final answer
    x = 1,257.77

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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.