Home / 4,811.60-6,640.98-3,133.28

Finding the Fourth Proportional to 4,811.60, 6,640.98 and 3,133.28

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Solution

The fourth proportional to 4,811.60, 6,640.98 and 3,133.28 is: 4,324.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.60 : 6,640.98 = 3,133.28 : x
  2. Step 2: Convert to fraction form
    4,811.60/6,640.98 = 3,133.28/x
  3. Step 3: Cross multiply
    4,811.60x = 6,640.98 × 3,133.28
  4. Step 4: Simplify right side
    4,811.60x = 20,808,049.81
  5. Step 5: Solve for x
    x = 20,808,049.81/4,811.60
  6. Step 6: Final answer
    x = 4,324.56

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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.