Home / 3,377.81-4,661.79-1,980.56

Finding the Fourth Proportional to 3,377.81, 4,661.79 and 1,980.56

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Solution

The fourth proportional to 3,377.81, 4,661.79 and 1,980.56 is: 2,733.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,377.81 : 4,661.79 = 1,980.56 : x
  2. Step 2: Convert to fraction form
    3,377.81/4,661.79 = 1,980.56/x
  3. Step 3: Cross multiply
    3,377.81x = 4,661.79 × 1,980.56
  4. Step 4: Simplify right side
    3,377.81x = 9,232,954.80
  5. Step 5: Solve for x
    x = 9,232,954.80/3,377.81
  6. Step 6: Final answer
    x = 2,733.41

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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.