Home / 3,979.37-5,491.70-2,210.96

Finding the Fourth Proportional to 3,979.37, 5,491.70 and 2,210.96

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Solution

The fourth proportional to 3,979.37, 5,491.70 and 2,210.96 is: 3,051.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.37 : 5,491.70 = 2,210.96 : x
  2. Step 2: Convert to fraction form
    3,979.37/5,491.70 = 2,210.96/x
  3. Step 3: Cross multiply
    3,979.37x = 5,491.70 × 2,210.96
  4. Step 4: Simplify right side
    3,979.37x = 12,141,890.52
  5. Step 5: Solve for x
    x = 12,141,890.52/3,979.37
  6. Step 6: Final answer
    x = 3,051.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.