Home / 3,112.86-4,670.01-1,815.42

Finding the Fourth Proportional to 3,112.86, 4,670.01 and 1,815.42

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Solution

The fourth proportional to 3,112.86, 4,670.01 and 1,815.42 is: 2,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.86 : 4,670.01 = 1,815.42 : x
  2. Step 2: Convert to fraction form
    3,112.86/4,670.01 = 1,815.42/x
  3. Step 3: Cross multiply
    3,112.86x = 4,670.01 × 1,815.42
  4. Step 4: Simplify right side
    3,112.86x = 8,478,029.55
  5. Step 5: Solve for x
    x = 8,478,029.55/3,112.86
  6. Step 6: Final answer
    x = 2,723.55

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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.