Home / 2,115.80-3,173.70-2,102.14

Finding the Fourth Proportional to 2,115.80, 3,173.70 and 2,102.14

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Solution

The fourth proportional to 2,115.80, 3,173.70 and 2,102.14 is: 3,153.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.80 : 3,173.70 = 2,102.14 : x
  2. Step 2: Convert to fraction form
    2,115.80/3,173.70 = 2,102.14/x
  3. Step 3: Cross multiply
    2,115.80x = 3,173.70 × 2,102.14
  4. Step 4: Simplify right side
    2,115.80x = 6,671,561.72
  5. Step 5: Solve for x
    x = 6,671,561.72/2,115.80
  6. Step 6: Final answer
    x = 3,153.21

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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.