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Finding the Fourth Proportional to 3,486.75, 4,811.94 and 1,995.18

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Solution

The fourth proportional to 3,486.75, 4,811.94 and 1,995.18 is: 2,753.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.75 : 4,811.94 = 1,995.18 : x
  2. Step 2: Convert to fraction form
    3,486.75/4,811.94 = 1,995.18/x
  3. Step 3: Cross multiply
    3,486.75x = 4,811.94 × 1,995.18
  4. Step 4: Simplify right side
    3,486.75x = 9,600,686.45
  5. Step 5: Solve for x
    x = 9,600,686.45/3,486.75
  6. Step 6: Final answer
    x = 2,753.48

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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.