Home / 2,156.62-3,231.36-2,075.70

Finding the Fourth Proportional to 2,156.62, 3,231.36 and 2,075.70

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Solution

The fourth proportional to 2,156.62, 3,231.36 and 2,075.70 is: 3,110.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.62 : 3,231.36 = 2,075.70 : x
  2. Step 2: Convert to fraction form
    2,156.62/3,231.36 = 2,075.70/x
  3. Step 3: Cross multiply
    2,156.62x = 3,231.36 × 2,075.70
  4. Step 4: Simplify right side
    2,156.62x = 6,707,333.95
  5. Step 5: Solve for x
    x = 6,707,333.95/2,156.62
  6. Step 6: Final answer
    x = 3,110.11

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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.