Home / 3,979.19-5,490.82-2,210.51

Finding the Fourth Proportional to 3,979.19, 5,490.82 and 2,210.51

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Solution

The fourth proportional to 3,979.19, 5,490.82 and 2,210.51 is: 3,050.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.19 : 5,490.82 = 2,210.51 : x
  2. Step 2: Convert to fraction form
    3,979.19/5,490.82 = 2,210.51/x
  3. Step 3: Cross multiply
    3,979.19x = 5,490.82 × 2,210.51
  4. Step 4: Simplify right side
    3,979.19x = 12,137,512.52
  5. Step 5: Solve for x
    x = 12,137,512.52/3,979.19
  6. Step 6: Final answer
    x = 3,050.25

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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.