Home / 2,212.89-3,317.02-825.63

Finding the Fourth Proportional to 2,212.89, 3,317.02 and 825.63

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Solution

The fourth proportional to 2,212.89, 3,317.02 and 825.63 is: 1,237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.89 : 3,317.02 = 825.63 : x
  2. Step 2: Convert to fraction form
    2,212.89/3,317.02 = 825.63/x
  3. Step 3: Cross multiply
    2,212.89x = 3,317.02 × 825.63
  4. Step 4: Simplify right side
    2,212.89x = 2,738,631.22
  5. Step 5: Solve for x
    x = 2,738,631.22/2,212.89
  6. Step 6: Final answer
    x = 1,237.58

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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.