Home / 7,039.78-10,558.14-2,108.10

Finding the Fourth Proportional to 7,039.78, 10,558.14 and 2,108.10

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Solution

The fourth proportional to 7,039.78, 10,558.14 and 2,108.10 is: 3,161.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.78 : 10,558.14 = 2,108.10 : x
  2. Step 2: Convert to fraction form
    7,039.78/10,558.14 = 2,108.10/x
  3. Step 3: Cross multiply
    7,039.78x = 10,558.14 × 2,108.10
  4. Step 4: Simplify right side
    7,039.78x = 22,257,562.14
  5. Step 5: Solve for x
    x = 22,257,562.14/7,039.78
  6. Step 6: Final answer
    x = 3,161.68

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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.