Home / 3,390.58-4,680.75-2,340.82

Finding the Fourth Proportional to 3,390.58, 4,680.75 and 2,340.82

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Solution

The fourth proportional to 3,390.58, 4,680.75 and 2,340.82 is: 3,231.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.58 : 4,680.75 = 2,340.82 : x
  2. Step 2: Convert to fraction form
    3,390.58/4,680.75 = 2,340.82/x
  3. Step 3: Cross multiply
    3,390.58x = 4,680.75 × 2,340.82
  4. Step 4: Simplify right side
    3,390.58x = 10,956,793.22
  5. Step 5: Solve for x
    x = 10,956,793.22/3,390.58
  6. Step 6: Final answer
    x = 3,231.54

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Half scale
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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.