Home / 2,129.04-3,192.36-667.92

Finding the Fourth Proportional to 2,129.04, 3,192.36 and 667.92

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Solution

The fourth proportional to 2,129.04, 3,192.36 and 667.92 is: 1,001.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.04 : 3,192.36 = 667.92 : x
  2. Step 2: Convert to fraction form
    2,129.04/3,192.36 = 667.92/x
  3. Step 3: Cross multiply
    2,129.04x = 3,192.36 × 667.92
  4. Step 4: Simplify right side
    2,129.04x = 2,132,241.09
  5. Step 5: Solve for x
    x = 2,132,241.09/2,129.04
  6. Step 6: Final answer
    x = 1,001.50

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1.5x scale

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.