Home / 1,972.81-2,959.32-1,874.38

Finding the Fourth Proportional to 1,972.81, 2,959.32 and 1,874.38

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Solution

The fourth proportional to 1,972.81, 2,959.32 and 1,874.38 is: 2,811.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.81 : 2,959.32 = 1,874.38 : x
  2. Step 2: Convert to fraction form
    1,972.81/2,959.32 = 1,874.38/x
  3. Step 3: Cross multiply
    1,972.81x = 2,959.32 × 1,874.38
  4. Step 4: Simplify right side
    1,972.81x = 5,546,890.22
  5. Step 5: Solve for x
    x = 5,546,890.22/1,972.81
  6. Step 6: Final answer
    x = 2,811.67

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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.