Home / 2,107.89-3,157.14-1,489.72

Finding the Fourth Proportional to 2,107.89, 3,157.14 and 1,489.72

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Solution

The fourth proportional to 2,107.89, 3,157.14 and 1,489.72 is: 2,231.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.89 : 3,157.14 = 1,489.72 : x
  2. Step 2: Convert to fraction form
    2,107.89/3,157.14 = 1,489.72/x
  3. Step 3: Cross multiply
    2,107.89x = 3,157.14 × 1,489.72
  4. Step 4: Simplify right side
    2,107.89x = 4,703,263.03
  5. Step 5: Solve for x
    x = 4,703,263.03/2,107.89
  6. Step 6: Final answer
    x = 2,231.26

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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.