Home / 3,231.28-4,459.08-1,815.13

Finding the Fourth Proportional to 3,231.28, 4,459.08 and 1,815.13

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Solution

The fourth proportional to 3,231.28, 4,459.08 and 1,815.13 is: 2,504.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.28 : 4,459.08 = 1,815.13 : x
  2. Step 2: Convert to fraction form
    3,231.28/4,459.08 = 1,815.13/x
  3. Step 3: Cross multiply
    3,231.28x = 4,459.08 × 1,815.13
  4. Step 4: Simplify right side
    3,231.28x = 8,093,809.88
  5. Step 5: Solve for x
    x = 8,093,809.88/3,231.28
  6. Step 6: Final answer
    x = 2,504.83

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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.