Home / 3,886.42-5,363.10-2,117.99

Finding the Fourth Proportional to 3,886.42, 5,363.10 and 2,117.99

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Solution

The fourth proportional to 3,886.42, 5,363.10 and 2,117.99 is: 2,922.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.42 : 5,363.10 = 2,117.99 : x
  2. Step 2: Convert to fraction form
    3,886.42/5,363.10 = 2,117.99/x
  3. Step 3: Cross multiply
    3,886.42x = 5,363.10 × 2,117.99
  4. Step 4: Simplify right side
    3,886.42x = 11,358,965.35
  5. Step 5: Solve for x
    x = 11,358,965.35/3,886.42
  6. Step 6: Final answer
    x = 2,922.73

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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.