Home / 2,180.99-3,276.39-1,315.91

Finding the Fourth Proportional to 2,180.99, 3,276.39 and 1,315.91

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Solution

The fourth proportional to 2,180.99, 3,276.39 and 1,315.91 is: 1,976.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.99 : 3,276.39 = 1,315.91 : x
  2. Step 2: Convert to fraction form
    2,180.99/3,276.39 = 1,315.91/x
  3. Step 3: Cross multiply
    2,180.99x = 3,276.39 × 1,315.91
  4. Step 4: Simplify right side
    2,180.99x = 4,311,434.36
  5. Step 5: Solve for x
    x = 4,311,434.36/2,180.99
  6. Step 6: Final answer
    x = 1,976.82

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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.