Home / 1,639.36-2,456.96-1,622

Finding the Fourth Proportional to 1,639.36, 2,456.96 and 1,622

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Solution

The fourth proportional to 1,639.36, 2,456.96 and 1,622 is: 2,430.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.36 : 2,456.96 = 1,622 : x
  2. Step 2: Convert to fraction form
    1,639.36/2,456.96 = 1,622/x
  3. Step 3: Cross multiply
    1,639.36x = 2,456.96 × 1,622
  4. Step 4: Simplify right side
    1,639.36x = 3,985,189.12
  5. Step 5: Solve for x
    x = 3,985,189.12/1,639.36
  6. Step 6: Final answer
    x = 2,430.94

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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.