Home / 3,120.66-4,680.72-1,365.12

Finding the Fourth Proportional to 3,120.66, 4,680.72 and 1,365.12

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Solution

The fourth proportional to 3,120.66, 4,680.72 and 1,365.12 is: 2,047.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.66 : 4,680.72 = 1,365.12 : x
  2. Step 2: Convert to fraction form
    3,120.66/4,680.72 = 1,365.12/x
  3. Step 3: Cross multiply
    3,120.66x = 4,680.72 × 1,365.12
  4. Step 4: Simplify right side
    3,120.66x = 6,389,744.49
  5. Step 5: Solve for x
    x = 6,389,744.49/3,120.66
  6. Step 6: Final answer
    x = 2,047.56

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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.