Home / 1,621.60-2,431.44-1,274.08

Finding the Fourth Proportional to 1,621.60, 2,431.44 and 1,274.08

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Solution

The fourth proportional to 1,621.60, 2,431.44 and 1,274.08 is: 1,910.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.60 : 2,431.44 = 1,274.08 : x
  2. Step 2: Convert to fraction form
    1,621.60/2,431.44 = 1,274.08/x
  3. Step 3: Cross multiply
    1,621.60x = 2,431.44 × 1,274.08
  4. Step 4: Simplify right side
    1,621.60x = 3,097,849.08
  5. Step 5: Solve for x
    x = 3,097,849.08/1,621.60
  6. Step 6: Final answer
    x = 1,910.37

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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.