Home / 2,974.07-4,103.03-1,911.65

Finding the Fourth Proportional to 2,974.07, 4,103.03 and 1,911.65

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Solution

The fourth proportional to 2,974.07, 4,103.03 and 1,911.65 is: 2,637.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.07 : 4,103.03 = 1,911.65 : x
  2. Step 2: Convert to fraction form
    2,974.07/4,103.03 = 1,911.65/x
  3. Step 3: Cross multiply
    2,974.07x = 4,103.03 × 1,911.65
  4. Step 4: Simplify right side
    2,974.07x = 7,843,559.27
  5. Step 5: Solve for x
    x = 7,843,559.27/2,974.07
  6. Step 6: Final answer
    x = 2,637.32

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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.