Home / 2,020.75-3,031.08-634.09

Finding the Fourth Proportional to 2,020.75, 3,031.08 and 634.09

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Solution

The fourth proportional to 2,020.75, 3,031.08 and 634.09 is: 951.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.75 : 3,031.08 = 634.09 : x
  2. Step 2: Convert to fraction form
    2,020.75/3,031.08 = 634.09/x
  3. Step 3: Cross multiply
    2,020.75x = 3,031.08 × 634.09
  4. Step 4: Simplify right side
    2,020.75x = 1,921,977.52
  5. Step 5: Solve for x
    x = 1,921,977.52/2,020.75
  6. Step 6: Final answer
    x = 951.12

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1.5x scale

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.