Home / 2,106.89-3,160.36-1,381.07

Finding the Fourth Proportional to 2,106.89, 3,160.36 and 1,381.07

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Solution

The fourth proportional to 2,106.89, 3,160.36 and 1,381.07 is: 2,071.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.89 : 3,160.36 = 1,381.07 : x
  2. Step 2: Convert to fraction form
    2,106.89/3,160.36 = 1,381.07/x
  3. Step 3: Cross multiply
    2,106.89x = 3,160.36 × 1,381.07
  4. Step 4: Simplify right side
    2,106.89x = 4,364,655.68
  5. Step 5: Solve for x
    x = 4,364,655.68/2,106.89
  6. Step 6: Final answer
    x = 2,071.61

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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.