Home / 2,309.21-3,186.78-1,301.09

Finding the Fourth Proportional to 2,309.21, 3,186.78 and 1,301.09

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Solution

The fourth proportional to 2,309.21, 3,186.78 and 1,301.09 is: 1,795.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.21 : 3,186.78 = 1,301.09 : x
  2. Step 2: Convert to fraction form
    2,309.21/3,186.78 = 1,301.09/x
  3. Step 3: Cross multiply
    2,309.21x = 3,186.78 × 1,301.09
  4. Step 4: Simplify right side
    2,309.21x = 4,146,271.66
  5. Step 5: Solve for x
    x = 4,146,271.66/2,309.21
  6. Step 6: Final answer
    x = 1,795.54

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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.