Home / 3,120.48-4,680.44-1,039.81

Finding the Fourth Proportional to 3,120.48, 4,680.44 and 1,039.81

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Solution

The fourth proportional to 3,120.48, 4,680.44 and 1,039.81 is: 1,559.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.48 : 4,680.44 = 1,039.81 : x
  2. Step 2: Convert to fraction form
    3,120.48/4,680.44 = 1,039.81/x
  3. Step 3: Cross multiply
    3,120.48x = 4,680.44 × 1,039.81
  4. Step 4: Simplify right side
    3,120.48x = 4,866,768.32
  5. Step 5: Solve for x
    x = 4,866,768.32/3,120.48
  6. Step 6: Final answer
    x = 1,559.62

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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.