Home / 2,688.12-3,711.30-1,944.48

Finding the Fourth Proportional to 2,688.12, 3,711.30 and 1,944.48

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Solution

The fourth proportional to 2,688.12, 3,711.30 and 1,944.48 is: 2,684.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.12 : 3,711.30 = 1,944.48 : x
  2. Step 2: Convert to fraction form
    2,688.12/3,711.30 = 1,944.48/x
  3. Step 3: Cross multiply
    2,688.12x = 3,711.30 × 1,944.48
  4. Step 4: Simplify right side
    2,688.12x = 7,216,548.62
  5. Step 5: Solve for x
    x = 7,216,548.62/2,688.12
  6. Step 6: Final answer
    x = 2,684.61

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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.