Home / 2,180.58-3,009.60-1,296.87

Finding the Fourth Proportional to 2,180.58, 3,009.60 and 1,296.87

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Solution

The fourth proportional to 2,180.58, 3,009.60 and 1,296.87 is: 1,789.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.58 : 3,009.60 = 1,296.87 : x
  2. Step 2: Convert to fraction form
    2,180.58/3,009.60 = 1,296.87/x
  3. Step 3: Cross multiply
    2,180.58x = 3,009.60 × 1,296.87
  4. Step 4: Simplify right side
    2,180.58x = 3,903,059.95
  5. Step 5: Solve for x
    x = 3,903,059.95/2,180.58
  6. Step 6: Final answer
    x = 1,789.92

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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.