Home / 4,811.80-6,640.25-2,687.30

Finding the Fourth Proportional to 4,811.80, 6,640.25 and 2,687.30

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Solution

The fourth proportional to 4,811.80, 6,640.25 and 2,687.30 is: 3,708.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.80 : 6,640.25 = 2,687.30 : x
  2. Step 2: Convert to fraction form
    4,811.80/6,640.25 = 2,687.30/x
  3. Step 3: Cross multiply
    4,811.80x = 6,640.25 × 2,687.30
  4. Step 4: Simplify right side
    4,811.80x = 17,844,367.14
  5. Step 5: Solve for x
    x = 17,844,367.14/4,811.80
  6. Step 6: Final answer
    x = 3,708.46

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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.