Home / 1,780.23-2,668.18-1,260.38

Finding the Fourth Proportional to 1,780.23, 2,668.18 and 1,260.38

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Solution

The fourth proportional to 1,780.23, 2,668.18 and 1,260.38 is: 1,889.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.23 : 2,668.18 = 1,260.38 : x
  2. Step 2: Convert to fraction form
    1,780.23/2,668.18 = 1,260.38/x
  3. Step 3: Cross multiply
    1,780.23x = 2,668.18 × 1,260.38
  4. Step 4: Simplify right side
    1,780.23x = 3,362,915.44
  5. Step 5: Solve for x
    x = 3,362,915.44/1,780.23
  6. Step 6: Final answer
    x = 1,889.04

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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.