Home / 1,621.74-2,431.35-1,072.56

Finding the Fourth Proportional to 1,621.74, 2,431.35 and 1,072.56

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Solution

The fourth proportional to 1,621.74, 2,431.35 and 1,072.56 is: 1,608.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.74 : 2,431.35 = 1,072.56 : x
  2. Step 2: Convert to fraction form
    1,621.74/2,431.35 = 1,072.56/x
  3. Step 3: Cross multiply
    1,621.74x = 2,431.35 × 1,072.56
  4. Step 4: Simplify right side
    1,621.74x = 2,607,768.76
  5. Step 5: Solve for x
    x = 2,607,768.76/1,621.74
  6. Step 6: Final answer
    x = 1,608.01

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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.