Home / 6,974.15-9,620.09-4,139.65

Finding the Fourth Proportional to 6,974.15, 9,620.09 and 4,139.65

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Solution

The fourth proportional to 6,974.15, 9,620.09 and 4,139.65 is: 5,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,974.15 : 9,620.09 = 4,139.65 : x
  2. Step 2: Convert to fraction form
    6,974.15/9,620.09 = 4,139.65/x
  3. Step 3: Cross multiply
    6,974.15x = 9,620.09 × 4,139.65
  4. Step 4: Simplify right side
    6,974.15x = 39,823,760.82
  5. Step 5: Solve for x
    x = 39,823,760.82/6,974.15
  6. Step 6: Final answer
    x = 5,710.20

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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.