Home / 3,386.09-4,672.66-1,969.78

Finding the Fourth Proportional to 3,386.09, 4,672.66 and 1,969.78

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Solution

The fourth proportional to 3,386.09, 4,672.66 and 1,969.78 is: 2,718.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.09 : 4,672.66 = 1,969.78 : x
  2. Step 2: Convert to fraction form
    3,386.09/4,672.66 = 1,969.78/x
  3. Step 3: Cross multiply
    3,386.09x = 4,672.66 × 1,969.78
  4. Step 4: Simplify right side
    3,386.09x = 9,204,112.21
  5. Step 5: Solve for x
    x = 9,204,112.21/3,386.09
  6. Step 6: Final answer
    x = 2,718.21

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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.