Home / 3,321.12-4,981.64-1,373.28

Finding the Fourth Proportional to 3,321.12, 4,981.64 and 1,373.28

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Solution

The fourth proportional to 3,321.12, 4,981.64 and 1,373.28 is: 2,059.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.12 : 4,981.64 = 1,373.28 : x
  2. Step 2: Convert to fraction form
    3,321.12/4,981.64 = 1,373.28/x
  3. Step 3: Cross multiply
    3,321.12x = 4,981.64 × 1,373.28
  4. Step 4: Simplify right side
    3,321.12x = 6,841,186.58
  5. Step 5: Solve for x
    x = 6,841,186.58/3,321.12
  6. Step 6: Final answer
    x = 2,059.90

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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.