Home / 3,581.76-5,366.88-2,815.68

Finding the Fourth Proportional to 3,581.76, 5,366.88 and 2,815.68

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Solution

The fourth proportional to 3,581.76, 5,366.88 and 2,815.68 is: 4,218.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.76 : 5,366.88 = 2,815.68 : x
  2. Step 2: Convert to fraction form
    3,581.76/5,366.88 = 2,815.68/x
  3. Step 3: Cross multiply
    3,581.76x = 5,366.88 × 2,815.68
  4. Step 4: Simplify right side
    3,581.76x = 15,111,416.68
  5. Step 5: Solve for x
    x = 15,111,416.68/3,581.76
  6. Step 6: Final answer
    x = 4,218.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.