Home / 2,645.92-3,981.58-2,180.74

Finding the Fourth Proportional to 2,645.92, 3,981.58 and 2,180.74

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Solution

The fourth proportional to 2,645.92, 3,981.58 and 2,180.74 is: 3,281.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645.92 : 3,981.58 = 2,180.74 : x
  2. Step 2: Convert to fraction form
    2,645.92/3,981.58 = 2,180.74/x
  3. Step 3: Cross multiply
    2,645.92x = 3,981.58 × 2,180.74
  4. Step 4: Simplify right side
    2,645.92x = 8,682,775.36
  5. Step 5: Solve for x
    x = 8,682,775.36/2,645.92
  6. Step 6: Final answer
    x = 3,281.57

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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.