Home / 3,321.36-4,980.83-1,129.50

Finding the Fourth Proportional to 3,321.36, 4,980.83 and 1,129.50

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Solution

The fourth proportional to 3,321.36, 4,980.83 and 1,129.50 is: 1,693.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.36 : 4,980.83 = 1,129.50 : x
  2. Step 2: Convert to fraction form
    3,321.36/4,980.83 = 1,129.50/x
  3. Step 3: Cross multiply
    3,321.36x = 4,980.83 × 1,129.50
  4. Step 4: Simplify right side
    3,321.36x = 5,625,841.84
  5. Step 5: Solve for x
    x = 5,625,841.84/3,321.36
  6. Step 6: Final answer
    x = 1,693.84

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1.5x scale

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.