Home / 2,156.52-3,234.78-1,813.08

Finding the Fourth Proportional to 2,156.52, 3,234.78 and 1,813.08

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Solution

The fourth proportional to 2,156.52, 3,234.78 and 1,813.08 is: 2,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.52 : 3,234.78 = 1,813.08 : x
  2. Step 2: Convert to fraction form
    2,156.52/3,234.78 = 1,813.08/x
  3. Step 3: Cross multiply
    2,156.52x = 3,234.78 × 1,813.08
  4. Step 4: Simplify right side
    2,156.52x = 5,864,914.92
  5. Step 5: Solve for x
    x = 5,864,914.92/2,156.52
  6. Step 6: Final answer
    x = 2,719.62

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1.5x scale

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.