Home / 3,279.06-4,918.56-1,331.28

Finding the Fourth Proportional to 3,279.06, 4,918.56 and 1,331.28

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Solution

The fourth proportional to 3,279.06, 4,918.56 and 1,331.28 is: 1,996.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.06 : 4,918.56 = 1,331.28 : x
  2. Step 2: Convert to fraction form
    3,279.06/4,918.56 = 1,331.28/x
  3. Step 3: Cross multiply
    3,279.06x = 4,918.56 × 1,331.28
  4. Step 4: Simplify right side
    3,279.06x = 6,547,980.56
  5. Step 5: Solve for x
    x = 6,547,980.56/3,279.06
  6. Step 6: Final answer
    x = 1,996.91

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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.