Home / 1,256.67-1,889.06-1,217.79

Finding the Fourth Proportional to 1,256.67, 1,889.06 and 1,217.79

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Solution

The fourth proportional to 1,256.67, 1,889.06 and 1,217.79 is: 1,830.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.67 : 1,889.06 = 1,217.79 : x
  2. Step 2: Convert to fraction form
    1,256.67/1,889.06 = 1,217.79/x
  3. Step 3: Cross multiply
    1,256.67x = 1,889.06 × 1,217.79
  4. Step 4: Simplify right side
    1,256.67x = 2,300,472.29
  5. Step 5: Solve for x
    x = 2,300,472.29/1,256.67
  6. Step 6: Final answer
    x = 1,830.61

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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.