Home / 2,687.41-4,032.33-1,389.79

Finding the Fourth Proportional to 2,687.41, 4,032.33 and 1,389.79

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Solution

The fourth proportional to 2,687.41, 4,032.33 and 1,389.79 is: 2,085.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.41 : 4,032.33 = 1,389.79 : x
  2. Step 2: Convert to fraction form
    2,687.41/4,032.33 = 1,389.79/x
  3. Step 3: Cross multiply
    2,687.41x = 4,032.33 × 1,389.79
  4. Step 4: Simplify right side
    2,687.41x = 5,604,091.91
  5. Step 5: Solve for x
    x = 5,604,091.91/2,687.41
  6. Step 6: Final answer
    x = 2,085.31

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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.