Home / 2,303.78-3,179.25-1,309.09

Finding the Fourth Proportional to 2,303.78, 3,179.25 and 1,309.09

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Solution

The fourth proportional to 2,303.78, 3,179.25 and 1,309.09 is: 1,806.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,303.78 : 3,179.25 = 1,309.09 : x
  2. Step 2: Convert to fraction form
    2,303.78/3,179.25 = 1,309.09/x
  3. Step 3: Cross multiply
    2,303.78x = 3,179.25 × 1,309.09
  4. Step 4: Simplify right side
    2,303.78x = 4,161,908.49
  5. Step 5: Solve for x
    x = 4,161,908.49/2,303.78
  6. Step 6: Final answer
    x = 1,806.56

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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.