Home / 1,838.35-2,530.60-1,396.09

Finding the Fourth Proportional to 1,838.35, 2,530.60 and 1,396.09

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Solution

The fourth proportional to 1,838.35, 2,530.60 and 1,396.09 is: 1,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.35 : 2,530.60 = 1,396.09 : x
  2. Step 2: Convert to fraction form
    1,838.35/2,530.60 = 1,396.09/x
  3. Step 3: Cross multiply
    1,838.35x = 2,530.60 × 1,396.09
  4. Step 4: Simplify right side
    1,838.35x = 3,532,945.35
  5. Step 5: Solve for x
    x = 3,532,945.35/1,838.35
  6. Step 6: Final answer
    x = 1,921.80

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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.