Home / 2,974.12-4,103.49-1,779.07

Finding the Fourth Proportional to 2,974.12, 4,103.49 and 1,779.07

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Solution

The fourth proportional to 2,974.12, 4,103.49 and 1,779.07 is: 2,454.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.12 : 4,103.49 = 1,779.07 : x
  2. Step 2: Convert to fraction form
    2,974.12/4,103.49 = 1,779.07/x
  3. Step 3: Cross multiply
    2,974.12x = 4,103.49 × 1,779.07
  4. Step 4: Simplify right side
    2,974.12x = 7,300,395.95
  5. Step 5: Solve for x
    x = 7,300,395.95/2,974.12
  6. Step 6: Final answer
    x = 2,454.64

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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.