Home / 3,178.60-4,769.76-1,329.56

Finding the Fourth Proportional to 3,178.60, 4,769.76 and 1,329.56

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Solution

The fourth proportional to 3,178.60, 4,769.76 and 1,329.56 is: 1,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.60 : 4,769.76 = 1,329.56 : x
  2. Step 2: Convert to fraction form
    3,178.60/4,769.76 = 1,329.56/x
  3. Step 3: Cross multiply
    3,178.60x = 4,769.76 × 1,329.56
  4. Step 4: Simplify right side
    3,178.60x = 6,341,682.11
  5. Step 5: Solve for x
    x = 6,341,682.11/3,178.60
  6. Step 6: Final answer
    x = 1,995.12

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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.