Home / 2,118.70-3,177.36-1,022.38

Finding the Fourth Proportional to 2,118.70, 3,177.36 and 1,022.38

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Solution

The fourth proportional to 2,118.70, 3,177.36 and 1,022.38 is: 1,533.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.70 : 3,177.36 = 1,022.38 : x
  2. Step 2: Convert to fraction form
    2,118.70/3,177.36 = 1,022.38/x
  3. Step 3: Cross multiply
    2,118.70x = 3,177.36 × 1,022.38
  4. Step 4: Simplify right side
    2,118.70x = 3,248,469.32
  5. Step 5: Solve for x
    x = 3,248,469.32/2,118.70
  6. Step 6: Final answer
    x = 1,533.24

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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.