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Finding the Fourth Proportional to 2,012.19, 3,018.56 and 625.74

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Solution

The fourth proportional to 2,012.19, 3,018.56 and 625.74 is: 938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.19 : 3,018.56 = 625.74 : x
  2. Step 2: Convert to fraction form
    2,012.19/3,018.56 = 625.74/x
  3. Step 3: Cross multiply
    2,012.19x = 3,018.56 × 625.74
  4. Step 4: Simplify right side
    2,012.19x = 1,888,833.73
  5. Step 5: Solve for x
    x = 1,888,833.73/2,012.19
  6. Step 6: Final answer
    x = 938.70

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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.