Home / 2,129.82-3,192.84-1,666.14

Finding the Fourth Proportional to 2,129.82, 3,192.84 and 1,666.14

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Solution

The fourth proportional to 2,129.82, 3,192.84 and 1,666.14 is: 2,497.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.82 : 3,192.84 = 1,666.14 : x
  2. Step 2: Convert to fraction form
    2,129.82/3,192.84 = 1,666.14/x
  3. Step 3: Cross multiply
    2,129.82x = 3,192.84 × 1,666.14
  4. Step 4: Simplify right side
    2,129.82x = 5,319,718.44
  5. Step 5: Solve for x
    x = 5,319,718.44/2,129.82
  6. Step 6: Final answer
    x = 2,497.73

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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.