Home / 2,405.92-3,324.68-1,815.40

Finding the Fourth Proportional to 2,405.92, 3,324.68 and 1,815.40

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Solution

The fourth proportional to 2,405.92, 3,324.68 and 1,815.40 is: 2,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.92 : 3,324.68 = 1,815.40 : x
  2. Step 2: Convert to fraction form
    2,405.92/3,324.68 = 1,815.40/x
  3. Step 3: Cross multiply
    2,405.92x = 3,324.68 × 1,815.40
  4. Step 4: Simplify right side
    2,405.92x = 6,035,624.07
  5. Step 5: Solve for x
    x = 6,035,624.07/2,405.92
  6. Step 6: Final answer
    x = 2,508.66

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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.