Home / 2,979.67-4,113.30-1,917.94

Finding the Fourth Proportional to 2,979.67, 4,113.30 and 1,917.94

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Solution

The fourth proportional to 2,979.67, 4,113.30 and 1,917.94 is: 2,647.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.67 : 4,113.30 = 1,917.94 : x
  2. Step 2: Convert to fraction form
    2,979.67/4,113.30 = 1,917.94/x
  3. Step 3: Cross multiply
    2,979.67x = 4,113.30 × 1,917.94
  4. Step 4: Simplify right side
    2,979.67x = 7,889,062.60
  5. Step 5: Solve for x
    x = 7,889,062.60/2,979.67
  6. Step 6: Final answer
    x = 2,647.63

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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.