Home / 3,886.29-5,363.15-2,117.97

Finding the Fourth Proportional to 3,886.29, 5,363.15 and 2,117.97

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Solution

The fourth proportional to 3,886.29, 5,363.15 and 2,117.97 is: 2,922.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.29 : 5,363.15 = 2,117.97 : x
  2. Step 2: Convert to fraction form
    3,886.29/5,363.15 = 2,117.97/x
  3. Step 3: Cross multiply
    3,886.29x = 5,363.15 × 2,117.97
  4. Step 4: Simplify right side
    3,886.29x = 11,358,980.22
  5. Step 5: Solve for x
    x = 11,358,980.22/3,886.29
  6. Step 6: Final answer
    x = 2,922.83

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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.