Home / 3,486.80-4,811.40-1,995.12

Finding the Fourth Proportional to 3,486.80, 4,811.40 and 1,995.12

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Solution

The fourth proportional to 3,486.80, 4,811.40 and 1,995.12 is: 2,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.80 : 4,811.40 = 1,995.12 : x
  2. Step 2: Convert to fraction form
    3,486.80/4,811.40 = 1,995.12/x
  3. Step 3: Cross multiply
    3,486.80x = 4,811.40 × 1,995.12
  4. Step 4: Simplify right side
    3,486.80x = 9,599,320.37
  5. Step 5: Solve for x
    x = 9,599,320.37/3,486.80
  6. Step 6: Final answer
    x = 2,753.05

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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.