Home / 1,260.26-1,878.09-1,247.96

Finding the Fourth Proportional to 1,260.26, 1,878.09 and 1,247.96

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Solution

The fourth proportional to 1,260.26, 1,878.09 and 1,247.96 is: 1,859.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.26 : 1,878.09 = 1,247.96 : x
  2. Step 2: Convert to fraction form
    1,260.26/1,878.09 = 1,247.96/x
  3. Step 3: Cross multiply
    1,260.26x = 1,878.09 × 1,247.96
  4. Step 4: Simplify right side
    1,260.26x = 2,343,770.65
  5. Step 5: Solve for x
    x = 2,343,770.65/1,260.26
  6. Step 6: Final answer
    x = 1,859.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.