Home / 2,178.81-3,268.31-1,023.75

Finding the Fourth Proportional to 2,178.81, 3,268.31 and 1,023.75

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Solution

The fourth proportional to 2,178.81, 3,268.31 and 1,023.75 is: 1,535.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.81 : 3,268.31 = 1,023.75 : x
  2. Step 2: Convert to fraction form
    2,178.81/3,268.31 = 1,023.75/x
  3. Step 3: Cross multiply
    2,178.81x = 3,268.31 × 1,023.75
  4. Step 4: Simplify right side
    2,178.81x = 3,345,927.24
  5. Step 5: Solve for x
    x = 3,345,927.24/2,178.81
  6. Step 6: Final answer
    x = 1,535.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.