Home / 3,178.54-4,765.88-1,423.21

Finding the Fourth Proportional to 3,178.54, 4,765.88 and 1,423.21

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Solution

The fourth proportional to 3,178.54, 4,765.88 and 1,423.21 is: 2,133.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.54 : 4,765.88 = 1,423.21 : x
  2. Step 2: Convert to fraction form
    3,178.54/4,765.88 = 1,423.21/x
  3. Step 3: Cross multiply
    3,178.54x = 4,765.88 × 1,423.21
  4. Step 4: Simplify right side
    3,178.54x = 6,782,848.07
  5. Step 5: Solve for x
    x = 6,782,848.07/3,178.54
  6. Step 6: Final answer
    x = 2,133.95

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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.