Home / 1,608.12-2,221.29-1,329.48

Finding the Fourth Proportional to 1,608.12, 2,221.29 and 1,329.48

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Solution

The fourth proportional to 1,608.12, 2,221.29 and 1,329.48 is: 1,836.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,608.12 : 2,221.29 = 1,329.48 : x
  2. Step 2: Convert to fraction form
    1,608.12/2,221.29 = 1,329.48/x
  3. Step 3: Cross multiply
    1,608.12x = 2,221.29 × 1,329.48
  4. Step 4: Simplify right side
    1,608.12x = 2,953,160.63
  5. Step 5: Solve for x
    x = 2,953,160.63/1,608.12
  6. Step 6: Final answer
    x = 1,836.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.