Home / 3,133.76-4,314.48-2,811.92

Finding the Fourth Proportional to 3,133.76, 4,314.48 and 2,811.92

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Solution

The fourth proportional to 3,133.76, 4,314.48 and 2,811.92 is: 3,871.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,133.76 : 4,314.48 = 2,811.92 : x
  2. Step 2: Convert to fraction form
    3,133.76/4,314.48 = 2,811.92/x
  3. Step 3: Cross multiply
    3,133.76x = 4,314.48 × 2,811.92
  4. Step 4: Simplify right side
    3,133.76x = 12,131,972.60
  5. Step 5: Solve for x
    x = 12,131,972.60/3,133.76
  6. Step 6: Final answer
    x = 3,871.38

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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.