Home / 7,873.86-11,807.45-2,940.05

Finding the Fourth Proportional to 7,873.86, 11,807.45 and 2,940.05

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Solution

The fourth proportional to 7,873.86, 11,807.45 and 2,940.05 is: 4,408.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.86 : 11,807.45 = 2,940.05 : x
  2. Step 2: Convert to fraction form
    7,873.86/11,807.45 = 2,940.05/x
  3. Step 3: Cross multiply
    7,873.86x = 11,807.45 × 2,940.05
  4. Step 4: Simplify right side
    7,873.86x = 34,714,493.37
  5. Step 5: Solve for x
    x = 34,714,493.37/7,873.86
  6. Step 6: Final answer
    x = 4,408.83

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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.