Home / 3,979.32-5,491.15-2,210.68

Finding the Fourth Proportional to 3,979.32, 5,491.15 and 2,210.68

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Solution

The fourth proportional to 3,979.32, 5,491.15 and 2,210.68 is: 3,050.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.32 : 5,491.15 = 2,210.68 : x
  2. Step 2: Convert to fraction form
    3,979.32/5,491.15 = 2,210.68/x
  3. Step 3: Cross multiply
    3,979.32x = 5,491.15 × 2,210.68
  4. Step 4: Simplify right side
    3,979.32x = 12,139,175.48
  5. Step 5: Solve for x
    x = 12,139,175.48/3,979.32
  6. Step 6: Final answer
    x = 3,050.57

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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.