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Finding the Fourth Proportional to 2,895.86, 3,995.85 and 1,636.84

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Solution

The fourth proportional to 2,895.86, 3,995.85 and 1,636.84 is: 2,258.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,895.86 : 3,995.85 = 1,636.84 : x
  2. Step 2: Convert to fraction form
    2,895.86/3,995.85 = 1,636.84/x
  3. Step 3: Cross multiply
    2,895.86x = 3,995.85 × 1,636.84
  4. Step 4: Simplify right side
    2,895.86x = 6,540,567.11
  5. Step 5: Solve for x
    x = 6,540,567.11/2,895.86
  6. Step 6: Final answer
    x = 2,258.59

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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.