Home / 3,205.75-4,423.40-2,141.81

Finding the Fourth Proportional to 3,205.75, 4,423.40 and 2,141.81

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Solution

The fourth proportional to 3,205.75, 4,423.40 and 2,141.81 is: 2,955.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.75 : 4,423.40 = 2,141.81 : x
  2. Step 2: Convert to fraction form
    3,205.75/4,423.40 = 2,141.81/x
  3. Step 3: Cross multiply
    3,205.75x = 4,423.40 × 2,141.81
  4. Step 4: Simplify right side
    3,205.75x = 9,474,082.35
  5. Step 5: Solve for x
    x = 9,474,082.35/3,205.75
  6. Step 6: Final answer
    x = 2,955.34

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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.