Home / 2,992.12-4,128.96-1,665.84

Finding the Fourth Proportional to 2,992.12, 4,128.96 and 1,665.84

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Solution

The fourth proportional to 2,992.12, 4,128.96 and 1,665.84 is: 2,298.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.12 : 4,128.96 = 1,665.84 : x
  2. Step 2: Convert to fraction form
    2,992.12/4,128.96 = 1,665.84/x
  3. Step 3: Cross multiply
    2,992.12x = 4,128.96 × 1,665.84
  4. Step 4: Simplify right side
    2,992.12x = 6,878,186.73
  5. Step 5: Solve for x
    x = 6,878,186.73/2,992.12
  6. Step 6: Final answer
    x = 2,298.77

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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.