Home / 6,940.78-10,409.55-2,009.10

Finding the Fourth Proportional to 6,940.78, 10,409.55 and 2,009.10

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Solution

The fourth proportional to 6,940.78, 10,409.55 and 2,009.10 is: 3,013.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,940.78 : 10,409.55 = 2,009.10 : x
  2. Step 2: Convert to fraction form
    6,940.78/10,409.55 = 2,009.10/x
  3. Step 3: Cross multiply
    6,940.78x = 10,409.55 × 2,009.10
  4. Step 4: Simplify right side
    6,940.78x = 20,913,826.91
  5. Step 5: Solve for x
    x = 20,913,826.91/6,940.78
  6. Step 6: Final answer
    x = 3,013.18

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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.