Home / 3,979.14-5,491.10-2,210.70

Finding the Fourth Proportional to 3,979.14, 5,491.10 and 2,210.70

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Solution

The fourth proportional to 3,979.14, 5,491.10 and 2,210.70 is: 3,050.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.14 : 5,491.10 = 2,210.70 : x
  2. Step 2: Convert to fraction form
    3,979.14/5,491.10 = 2,210.70/x
  3. Step 3: Cross multiply
    3,979.14x = 5,491.10 × 2,210.70
  4. Step 4: Simplify right side
    3,979.14x = 12,139,174.77
  5. Step 5: Solve for x
    x = 12,139,174.77/3,979.14
  6. Step 6: Final answer
    x = 3,050.70

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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.