Home / 2,018.66-2,785.73-1,122.39

Finding the Fourth Proportional to 2,018.66, 2,785.73 and 1,122.39

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Solution

The fourth proportional to 2,018.66, 2,785.73 and 1,122.39 is: 1,548.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.66 : 2,785.73 = 1,122.39 : x
  2. Step 2: Convert to fraction form
    2,018.66/2,785.73 = 1,122.39/x
  3. Step 3: Cross multiply
    2,018.66x = 2,785.73 × 1,122.39
  4. Step 4: Simplify right side
    2,018.66x = 3,126,669.88
  5. Step 5: Solve for x
    x = 3,126,669.88/2,018.66
  6. Step 6: Final answer
    x = 1,548.89

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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.