Home / 4,321.06-6,480.80-1,200.28

Finding the Fourth Proportional to 4,321.06, 6,480.80 and 1,200.28

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Solution

The fourth proportional to 4,321.06, 6,480.80 and 1,200.28 is: 1,800.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,321.06 : 6,480.80 = 1,200.28 : x
  2. Step 2: Convert to fraction form
    4,321.06/6,480.80 = 1,200.28/x
  3. Step 3: Cross multiply
    4,321.06x = 6,480.80 × 1,200.28
  4. Step 4: Simplify right side
    4,321.06x = 7,778,774.62
  5. Step 5: Solve for x
    x = 7,778,774.62/4,321.06
  6. Step 6: Final answer
    x = 1,800.20

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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.