Home / 3,308.40-4,960.80-1,228.32

Finding the Fourth Proportional to 3,308.40, 4,960.80 and 1,228.32

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Solution

The fourth proportional to 3,308.40, 4,960.80 and 1,228.32 is: 1,841.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,308.40 : 4,960.80 = 1,228.32 : x
  2. Step 2: Convert to fraction form
    3,308.40/4,960.80 = 1,228.32/x
  3. Step 3: Cross multiply
    3,308.40x = 4,960.80 × 1,228.32
  4. Step 4: Simplify right side
    3,308.40x = 6,093,449.86
  5. Step 5: Solve for x
    x = 6,093,449.86/3,308.40
  6. Step 6: Final answer
    x = 1,841.81

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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.