Home / 3,216.22-4,825.55-1,981.78

Finding the Fourth Proportional to 3,216.22, 4,825.55 and 1,981.78

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Solution

The fourth proportional to 3,216.22, 4,825.55 and 1,981.78 is: 2,973.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.22 : 4,825.55 = 1,981.78 : x
  2. Step 2: Convert to fraction form
    3,216.22/4,825.55 = 1,981.78/x
  3. Step 3: Cross multiply
    3,216.22x = 4,825.55 × 1,981.78
  4. Step 4: Simplify right side
    3,216.22x = 9,563,178.48
  5. Step 5: Solve for x
    x = 9,563,178.48/3,216.22
  6. Step 6: Final answer
    x = 2,973.42

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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.