Home / 3,974.47-5,481.65-2,779.07

Finding the Fourth Proportional to 3,974.47, 5,481.65 and 2,779.07

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Solution

The fourth proportional to 3,974.47, 5,481.65 and 2,779.07 is: 3,832.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.47 : 5,481.65 = 2,779.07 : x
  2. Step 2: Convert to fraction form
    3,974.47/5,481.65 = 2,779.07/x
  3. Step 3: Cross multiply
    3,974.47x = 5,481.65 × 2,779.07
  4. Step 4: Simplify right side
    3,974.47x = 15,233,868.60
  5. Step 5: Solve for x
    x = 15,233,868.60/3,974.47
  6. Step 6: Final answer
    x = 3,832.93

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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.