Home / 2,422.12-3,342.78-1,478.44

Finding the Fourth Proportional to 2,422.12, 3,342.78 and 1,478.44

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Solution

The fourth proportional to 2,422.12, 3,342.78 and 1,478.44 is: 2,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.12 : 3,342.78 = 1,478.44 : x
  2. Step 2: Convert to fraction form
    2,422.12/3,342.78 = 1,478.44/x
  3. Step 3: Cross multiply
    2,422.12x = 3,342.78 × 1,478.44
  4. Step 4: Simplify right side
    2,422.12x = 4,942,099.66
  5. Step 5: Solve for x
    x = 4,942,099.66/2,422.12
  6. Step 6: Final answer
    x = 2,040.40

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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.