Home / 8,178.15-12,270.87-2,982.81

Finding the Fourth Proportional to 8,178.15, 12,270.87 and 2,982.81

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Solution

The fourth proportional to 8,178.15, 12,270.87 and 2,982.81 is: 4,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.15 : 12,270.87 = 2,982.81 : x
  2. Step 2: Convert to fraction form
    8,178.15/12,270.87 = 2,982.81/x
  3. Step 3: Cross multiply
    8,178.15x = 12,270.87 × 2,982.81
  4. Step 4: Simplify right side
    8,178.15x = 36,601,673.74
  5. Step 5: Solve for x
    x = 36,601,673.74/8,178.15
  6. Step 6: Final answer
    x = 4,475.54

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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.