Home / 1,892.11-2,611.20-1,052.80

Finding the Fourth Proportional to 1,892.11, 2,611.20 and 1,052.80

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Solution

The fourth proportional to 1,892.11, 2,611.20 and 1,052.80 is: 1,452.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.11 : 2,611.20 = 1,052.80 : x
  2. Step 2: Convert to fraction form
    1,892.11/2,611.20 = 1,052.80/x
  3. Step 3: Cross multiply
    1,892.11x = 2,611.20 × 1,052.80
  4. Step 4: Simplify right side
    1,892.11x = 2,749,071.36
  5. Step 5: Solve for x
    x = 2,749,071.36/1,892.11
  6. Step 6: Final answer
    x = 1,452.91

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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.