Home / 3,980.46-5,972.85-1,673.58

Finding the Fourth Proportional to 3,980.46, 5,972.85 and 1,673.58

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Solution

The fourth proportional to 3,980.46, 5,972.85 and 1,673.58 is: 2,511.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.46 : 5,972.85 = 1,673.58 : x
  2. Step 2: Convert to fraction form
    3,980.46/5,972.85 = 1,673.58/x
  3. Step 3: Cross multiply
    3,980.46x = 5,972.85 × 1,673.58
  4. Step 4: Simplify right side
    3,980.46x = 9,996,042.30
  5. Step 5: Solve for x
    x = 9,996,042.30/3,980.46
  6. Step 6: Final answer
    x = 2,511.28

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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.