Home / 2,930.87-4,042.44-1,812.39

Finding the Fourth Proportional to 2,930.87, 4,042.44 and 1,812.39

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Solution

The fourth proportional to 2,930.87, 4,042.44 and 1,812.39 is: 2,499.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.87 : 4,042.44 = 1,812.39 : x
  2. Step 2: Convert to fraction form
    2,930.87/4,042.44 = 1,812.39/x
  3. Step 3: Cross multiply
    2,930.87x = 4,042.44 × 1,812.39
  4. Step 4: Simplify right side
    2,930.87x = 7,326,477.83
  5. Step 5: Solve for x
    x = 7,326,477.83/2,930.87
  6. Step 6: Final answer
    x = 2,499.77

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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.