Home / 2,422-3,342.40-1,318

Finding the Fourth Proportional to 2,422, 3,342.40 and 1,318

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Solution

The fourth proportional to 2,422, 3,342.40 and 1,318 is: 1,818.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422 : 3,342.40 = 1,318 : x
  2. Step 2: Convert to fraction form
    2,422/3,342.40 = 1,318/x
  3. Step 3: Cross multiply
    2,422x = 3,342.40 × 1,318
  4. Step 4: Simplify right side
    2,422x = 4,405,283.20
  5. Step 5: Solve for x
    x = 4,405,283.20/2,422
  6. Step 6: Final answer
    x = 1,818.86

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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.