Home / 7,178.86-10,768.87-1,984.73

Finding the Fourth Proportional to 7,178.86, 10,768.87 and 1,984.73

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Solution

The fourth proportional to 7,178.86, 10,768.87 and 1,984.73 is: 2,977.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178.86 : 10,768.87 = 1,984.73 : x
  2. Step 2: Convert to fraction form
    7,178.86/10,768.87 = 1,984.73/x
  3. Step 3: Cross multiply
    7,178.86x = 10,768.87 × 1,984.73
  4. Step 4: Simplify right side
    7,178.86x = 21,373,299.36
  5. Step 5: Solve for x
    x = 21,373,299.36/7,178.86
  6. Step 6: Final answer
    x = 2,977.26

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1.5x scale

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.