Home / 3,216-4,438.32-1,974.24

Finding the Fourth Proportional to 3,216, 4,438.32 and 1,974.24

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Solution

The fourth proportional to 3,216, 4,438.32 and 1,974.24 is: 2,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216 : 4,438.32 = 1,974.24 : x
  2. Step 2: Convert to fraction form
    3,216/4,438.32 = 1,974.24/x
  3. Step 3: Cross multiply
    3,216x = 4,438.32 × 1,974.24
  4. Step 4: Simplify right side
    3,216x = 8,762,308.88
  5. Step 5: Solve for x
    x = 8,762,308.88/3,216
  6. Step 6: Final answer
    x = 2,724.60

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1.5x scale

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.