Home / 1,880.68-2,819.98-1,288.38

Finding the Fourth Proportional to 1,880.68, 2,819.98 and 1,288.38

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Solution

The fourth proportional to 1,880.68, 2,819.98 and 1,288.38 is: 1,931.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,880.68 : 2,819.98 = 1,288.38 : x
  2. Step 2: Convert to fraction form
    1,880.68/2,819.98 = 1,288.38/x
  3. Step 3: Cross multiply
    1,880.68x = 2,819.98 × 1,288.38
  4. Step 4: Simplify right side
    1,880.68x = 3,633,207.44
  5. Step 5: Solve for x
    x = 3,633,207.44/1,880.68
  6. Step 6: Final answer
    x = 1,931.86

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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.