Home / 3,632.40-5,455.20-3,178.80

Finding the Fourth Proportional to 3,632.40, 5,455.20 and 3,178.80

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Solution

The fourth proportional to 3,632.40, 5,455.20 and 3,178.80 is: 4,773.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,632.40 : 5,455.20 = 3,178.80 : x
  2. Step 2: Convert to fraction form
    3,632.40/5,455.20 = 3,178.80/x
  3. Step 3: Cross multiply
    3,632.40x = 5,455.20 × 3,178.80
  4. Step 4: Simplify right side
    3,632.40x = 17,340,989.76
  5. Step 5: Solve for x
    x = 17,340,989.76/3,632.40
  6. Step 6: Final answer
    x = 4,773.98

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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.