Home / 2,231.81-3,080.39-1,858.20

Finding the Fourth Proportional to 2,231.81, 3,080.39 and 1,858.20

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Solution

The fourth proportional to 2,231.81, 3,080.39 and 1,858.20 is: 2,564.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.81 : 3,080.39 = 1,858.20 : x
  2. Step 2: Convert to fraction form
    2,231.81/3,080.39 = 1,858.20/x
  3. Step 3: Cross multiply
    2,231.81x = 3,080.39 × 1,858.20
  4. Step 4: Simplify right side
    2,231.81x = 5,723,980.70
  5. Step 5: Solve for x
    x = 5,723,980.70/2,231.81
  6. Step 6: Final answer
    x = 2,564.73

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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.