Home / 2,108.20-3,162.30-2,075.80

Finding the Fourth Proportional to 2,108.20, 3,162.30 and 2,075.80

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Solution

The fourth proportional to 2,108.20, 3,162.30 and 2,075.80 is: 3,113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.20 : 3,162.30 = 2,075.80 : x
  2. Step 2: Convert to fraction form
    2,108.20/3,162.30 = 2,075.80/x
  3. Step 3: Cross multiply
    2,108.20x = 3,162.30 × 2,075.80
  4. Step 4: Simplify right side
    2,108.20x = 6,564,302.34
  5. Step 5: Solve for x
    x = 6,564,302.34/2,108.20
  6. Step 6: Final answer
    x = 3,113.70

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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.