Home / 3,979.34-5,491.63-2,210.91

Finding the Fourth Proportional to 3,979.34, 5,491.63 and 2,210.91

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Solution

The fourth proportional to 3,979.34, 5,491.63 and 2,210.91 is: 3,051.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.34 : 5,491.63 = 2,210.91 : x
  2. Step 2: Convert to fraction form
    3,979.34/5,491.63 = 2,210.91/x
  3. Step 3: Cross multiply
    3,979.34x = 5,491.63 × 2,210.91
  4. Step 4: Simplify right side
    3,979.34x = 12,141,481.85
  5. Step 5: Solve for x
    x = 12,141,481.85/3,979.34
  6. Step 6: Final answer
    x = 3,051.13

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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.