Home / 3,886.33-5,363.05-2,117.95

Finding the Fourth Proportional to 3,886.33, 5,363.05 and 2,117.95

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Solution

The fourth proportional to 3,886.33, 5,363.05 and 2,117.95 is: 2,922.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.33 : 5,363.05 = 2,117.95 : x
  2. Step 2: Convert to fraction form
    3,886.33/5,363.05 = 2,117.95/x
  3. Step 3: Cross multiply
    3,886.33x = 5,363.05 × 2,117.95
  4. Step 4: Simplify right side
    3,886.33x = 11,358,671.75
  5. Step 5: Solve for x
    x = 11,358,671.75/3,886.33
  6. Step 6: Final answer
    x = 2,922.72

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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.