Home / 3,180.36-4,771.40-1,330.50

Finding the Fourth Proportional to 3,180.36, 4,771.40 and 1,330.50

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Solution

The fourth proportional to 3,180.36, 4,771.40 and 1,330.50 is: 1,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.36 : 4,771.40 = 1,330.50 : x
  2. Step 2: Convert to fraction form
    3,180.36/4,771.40 = 1,330.50/x
  3. Step 3: Cross multiply
    3,180.36x = 4,771.40 × 1,330.50
  4. Step 4: Simplify right side
    3,180.36x = 6,348,341.05
  5. Step 5: Solve for x
    x = 6,348,341.05/3,180.36
  6. Step 6: Final answer
    x = 1,996.11

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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.