Home / 1,958.81-2,934.31-1,178.39

Finding the Fourth Proportional to 1,958.81, 2,934.31 and 1,178.39

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Solution

The fourth proportional to 1,958.81, 2,934.31 and 1,178.39 is: 1,765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958.81 : 2,934.31 = 1,178.39 : x
  2. Step 2: Convert to fraction form
    1,958.81/2,934.31 = 1,178.39/x
  3. Step 3: Cross multiply
    1,958.81x = 2,934.31 × 1,178.39
  4. Step 4: Simplify right side
    1,958.81x = 3,457,749.45
  5. Step 5: Solve for x
    x = 3,457,749.45/1,958.81
  6. Step 6: Final answer
    x = 1,765.23

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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.