Home / 2,929.87-4,042.11-1,808.89

Finding the Fourth Proportional to 2,929.87, 4,042.11 and 1,808.89

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Solution

The fourth proportional to 2,929.87, 4,042.11 and 1,808.89 is: 2,495.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.87 : 4,042.11 = 1,808.89 : x
  2. Step 2: Convert to fraction form
    2,929.87/4,042.11 = 1,808.89/x
  3. Step 3: Cross multiply
    2,929.87x = 4,042.11 × 1,808.89
  4. Step 4: Simplify right side
    2,929.87x = 7,311,732.36
  5. Step 5: Solve for x
    x = 7,311,732.36/2,929.87
  6. Step 6: Final answer
    x = 2,495.58

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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.