Home / 2,992.19-4,129.40-1,665.89

Finding the Fourth Proportional to 2,992.19, 4,129.40 and 1,665.89

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Solution

The fourth proportional to 2,992.19, 4,129.40 and 1,665.89 is: 2,299.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.19 : 4,129.40 = 1,665.89 : x
  2. Step 2: Convert to fraction form
    2,992.19/4,129.40 = 1,665.89/x
  3. Step 3: Cross multiply
    2,992.19x = 4,129.40 × 1,665.89
  4. Step 4: Simplify right side
    2,992.19x = 6,879,117.84
  5. Step 5: Solve for x
    x = 6,879,117.84/2,992.19
  6. Step 6: Final answer
    x = 2,299.02

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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.