Home / 2,782.89-3,840.40-1,523.96

Finding the Fourth Proportional to 2,782.89, 3,840.40 and 1,523.96

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Solution

The fourth proportional to 2,782.89, 3,840.40 and 1,523.96 is: 2,103.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.89 : 3,840.40 = 1,523.96 : x
  2. Step 2: Convert to fraction form
    2,782.89/3,840.40 = 1,523.96/x
  3. Step 3: Cross multiply
    2,782.89x = 3,840.40 × 1,523.96
  4. Step 4: Simplify right side
    2,782.89x = 5,852,615.98
  5. Step 5: Solve for x
    x = 5,852,615.98/2,782.89
  6. Step 6: Final answer
    x = 2,103.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.