Home / 2,172.64-3,261.44-1,651.36

Finding the Fourth Proportional to 2,172.64, 3,261.44 and 1,651.36

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Solution

The fourth proportional to 2,172.64, 3,261.44 and 1,651.36 is: 2,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.64 : 3,261.44 = 1,651.36 : x
  2. Step 2: Convert to fraction form
    2,172.64/3,261.44 = 1,651.36/x
  3. Step 3: Cross multiply
    2,172.64x = 3,261.44 × 1,651.36
  4. Step 4: Simplify right side
    2,172.64x = 5,385,811.56
  5. Step 5: Solve for x
    x = 5,385,811.56/2,172.64
  6. Step 6: Final answer
    x = 2,478.92

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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.