Home / 3,189.07-4,390.14-2,628.65

Finding the Fourth Proportional to 3,189.07, 4,390.14 and 2,628.65

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Solution

The fourth proportional to 3,189.07, 4,390.14 and 2,628.65 is: 3,618.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.07 : 4,390.14 = 2,628.65 : x
  2. Step 2: Convert to fraction form
    3,189.07/4,390.14 = 2,628.65/x
  3. Step 3: Cross multiply
    3,189.07x = 4,390.14 × 2,628.65
  4. Step 4: Simplify right side
    3,189.07x = 11,540,141.51
  5. Step 5: Solve for x
    x = 11,540,141.51/3,189.07
  6. Step 6: Final answer
    x = 3,618.65

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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.