Home / 1,621.49-2,428.99-1,249.99

Finding the Fourth Proportional to 1,621.49, 2,428.99 and 1,249.99

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Solution

The fourth proportional to 1,621.49, 2,428.99 and 1,249.99 is: 1,872.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.49 : 2,428.99 = 1,249.99 : x
  2. Step 2: Convert to fraction form
    1,621.49/2,428.99 = 1,249.99/x
  3. Step 3: Cross multiply
    1,621.49x = 2,428.99 × 1,249.99
  4. Step 4: Simplify right side
    1,621.49x = 3,036,217.81
  5. Step 5: Solve for x
    x = 3,036,217.81/1,621.49
  6. Step 6: Final answer
    x = 1,872.49

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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.