Home / 3,148.16-4,723.84-2,120

Finding the Fourth Proportional to 3,148.16, 4,723.84 and 2,120

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Solution

The fourth proportional to 3,148.16, 4,723.84 and 2,120 is: 3,181.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.16 : 4,723.84 = 2,120 : x
  2. Step 2: Convert to fraction form
    3,148.16/4,723.84 = 2,120/x
  3. Step 3: Cross multiply
    3,148.16x = 4,723.84 × 2,120
  4. Step 4: Simplify right side
    3,148.16x = 10,014,540.80
  5. Step 5: Solve for x
    x = 10,014,540.80/3,148.16
  6. Step 6: Final answer
    x = 3,181.08

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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.