Home / 1,608.09-2,412.59-1,318.31

Finding the Fourth Proportional to 1,608.09, 2,412.59 and 1,318.31

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Solution

The fourth proportional to 1,608.09, 2,412.59 and 1,318.31 is: 1,977.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.09 : 2,412.59 = 1,318.31 : x
  2. Step 2: Convert to fraction form
    1,608.09/2,412.59 = 1,318.31/x
  3. Step 3: Cross multiply
    1,608.09x = 2,412.59 × 1,318.31
  4. Step 4: Simplify right side
    1,608.09x = 3,180,531.92
  5. Step 5: Solve for x
    x = 3,180,531.92/1,608.09
  6. Step 6: Final answer
    x = 1,977.84

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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.