Home / 1,974.08-2,725.36-1,311.84

Finding the Fourth Proportional to 1,974.08, 2,725.36 and 1,311.84

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Solution

The fourth proportional to 1,974.08, 2,725.36 and 1,311.84 is: 1,811.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.08 : 2,725.36 = 1,311.84 : x
  2. Step 2: Convert to fraction form
    1,974.08/2,725.36 = 1,311.84/x
  3. Step 3: Cross multiply
    1,974.08x = 2,725.36 × 1,311.84
  4. Step 4: Simplify right side
    1,974.08x = 3,575,236.26
  5. Step 5: Solve for x
    x = 3,575,236.26/1,974.08
  6. Step 6: Final answer
    x = 1,811.09

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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.