Home / 3,208.38-4,427.56-1,811.40

Finding the Fourth Proportional to 3,208.38, 4,427.56 and 1,811.40

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Solution

The fourth proportional to 3,208.38, 4,427.56 and 1,811.40 is: 2,499.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.38 : 4,427.56 = 1,811.40 : x
  2. Step 2: Convert to fraction form
    3,208.38/4,427.56 = 1,811.40/x
  3. Step 3: Cross multiply
    3,208.38x = 4,427.56 × 1,811.40
  4. Step 4: Simplify right side
    3,208.38x = 8,020,082.18
  5. Step 5: Solve for x
    x = 8,020,082.18/3,208.38
  6. Step 6: Final answer
    x = 2,499.73

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Half scale
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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.