Home / 1,881.40-2,816.52-1,396.60

Finding the Fourth Proportional to 1,881.40, 2,816.52 and 1,396.60

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Solution

The fourth proportional to 1,881.40, 2,816.52 and 1,396.60 is: 2,090.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.40 : 2,816.52 = 1,396.60 : x
  2. Step 2: Convert to fraction form
    1,881.40/2,816.52 = 1,396.60/x
  3. Step 3: Cross multiply
    1,881.40x = 2,816.52 × 1,396.60
  4. Step 4: Simplify right side
    1,881.40x = 3,933,551.83
  5. Step 5: Solve for x
    x = 3,933,551.83/1,881.40
  6. Step 6: Final answer
    x = 2,090.76

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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.