Home / 2,018.73-2,785-1,272.27

Finding the Fourth Proportional to 2,018.73, 2,785 and 1,272.27

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Solution

The fourth proportional to 2,018.73, 2,785 and 1,272.27 is: 1,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.73 : 2,785 = 1,272.27 : x
  2. Step 2: Convert to fraction form
    2,018.73/2,785 = 1,272.27/x
  3. Step 3: Cross multiply
    2,018.73x = 2,785 × 1,272.27
  4. Step 4: Simplify right side
    2,018.73x = 3,543,271.95
  5. Step 5: Solve for x
    x = 3,543,271.95/2,018.73
  6. Step 6: Final answer
    x = 1,755.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.