Home / 2,438.35-3,657.04-1,121.79

Finding the Fourth Proportional to 2,438.35, 3,657.04 and 1,121.79

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Solution

The fourth proportional to 2,438.35, 3,657.04 and 1,121.79 is: 1,682.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.35 : 3,657.04 = 1,121.79 : x
  2. Step 2: Convert to fraction form
    2,438.35/3,657.04 = 1,121.79/x
  3. Step 3: Cross multiply
    2,438.35x = 3,657.04 × 1,121.79
  4. Step 4: Simplify right side
    2,438.35x = 4,102,430.90
  5. Step 5: Solve for x
    x = 4,102,430.90/2,438.35
  6. Step 6: Final answer
    x = 1,682.46

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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.