Home / 3,576.20-4,933.68-2,178.80

Finding the Fourth Proportional to 3,576.20, 4,933.68 and 2,178.80

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Solution

The fourth proportional to 3,576.20, 4,933.68 and 2,178.80 is: 3,005.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,576.20 : 4,933.68 = 2,178.80 : x
  2. Step 2: Convert to fraction form
    3,576.20/4,933.68 = 2,178.80/x
  3. Step 3: Cross multiply
    3,576.20x = 4,933.68 × 2,178.80
  4. Step 4: Simplify right side
    3,576.20x = 10,749,501.98
  5. Step 5: Solve for x
    x = 10,749,501.98/3,576.20
  6. Step 6: Final answer
    x = 3,005.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.