Home / 3,886.93-5,363.72-2,208.21

Finding the Fourth Proportional to 3,886.93, 5,363.72 and 2,208.21

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Solution

The fourth proportional to 3,886.93, 5,363.72 and 2,208.21 is: 3,047.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.93 : 5,363.72 = 2,208.21 : x
  2. Step 2: Convert to fraction form
    3,886.93/5,363.72 = 2,208.21/x
  3. Step 3: Cross multiply
    3,886.93x = 5,363.72 × 2,208.21
  4. Step 4: Simplify right side
    3,886.93x = 11,844,182.28
  5. Step 5: Solve for x
    x = 11,844,182.28/3,886.93
  6. Step 6: Final answer
    x = 3,047.18

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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.