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Finding the Fourth Proportional to 2,012.20, 3,018.74 and 625.52

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Solution

The fourth proportional to 2,012.20, 3,018.74 and 625.52 is: 938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.20 : 3,018.74 = 625.52 : x
  2. Step 2: Convert to fraction form
    2,012.20/3,018.74 = 625.52/x
  3. Step 3: Cross multiply
    2,012.20x = 3,018.74 × 625.52
  4. Step 4: Simplify right side
    2,012.20x = 1,888,282.24
  5. Step 5: Solve for x
    x = 1,888,282.24/2,012.20
  6. Step 6: Final answer
    x = 938.42

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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.