Home / 2,216.78-3,325.09-829.55

Finding the Fourth Proportional to 2,216.78, 3,325.09 and 829.55

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Solution

The fourth proportional to 2,216.78, 3,325.09 and 829.55 is: 1,244.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.78 : 3,325.09 = 829.55 : x
  2. Step 2: Convert to fraction form
    2,216.78/3,325.09 = 829.55/x
  3. Step 3: Cross multiply
    2,216.78x = 3,325.09 × 829.55
  4. Step 4: Simplify right side
    2,216.78x = 2,758,328.41
  5. Step 5: Solve for x
    x = 2,758,328.41/2,216.78
  6. Step 6: Final answer
    x = 1,244.30

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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.