Home / 1,278.27-1,914.08-1,071.81

Finding the Fourth Proportional to 1,278.27, 1,914.08 and 1,071.81

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Solution

The fourth proportional to 1,278.27, 1,914.08 and 1,071.81 is: 1,604.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.27 : 1,914.08 = 1,071.81 : x
  2. Step 2: Convert to fraction form
    1,278.27/1,914.08 = 1,071.81/x
  3. Step 3: Cross multiply
    1,278.27x = 1,914.08 × 1,071.81
  4. Step 4: Simplify right side
    1,278.27x = 2,051,524.73
  5. Step 5: Solve for x
    x = 2,051,524.73/1,278.27
  6. Step 6: Final answer
    x = 1,604.92

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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.