Home / 2,111.25-3,167.30-650.35

Finding the Fourth Proportional to 2,111.25, 3,167.30 and 650.35

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Solution

The fourth proportional to 2,111.25, 3,167.30 and 650.35 is: 975.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,111.25 : 3,167.30 = 650.35 : x
  2. Step 2: Convert to fraction form
    2,111.25/3,167.30 = 650.35/x
  3. Step 3: Cross multiply
    2,111.25x = 3,167.30 × 650.35
  4. Step 4: Simplify right side
    2,111.25x = 2,059,842.39
  5. Step 5: Solve for x
    x = 2,059,842.39/2,111.25
  6. Step 6: Final answer
    x = 975.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.