Home / 2,180.32-3,008.55-1,295.80

Finding the Fourth Proportional to 2,180.32, 3,008.55 and 1,295.80

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Solution

The fourth proportional to 2,180.32, 3,008.55 and 1,295.80 is: 1,788.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.32 : 3,008.55 = 1,295.80 : x
  2. Step 2: Convert to fraction form
    2,180.32/3,008.55 = 1,295.80/x
  3. Step 3: Cross multiply
    2,180.32x = 3,008.55 × 1,295.80
  4. Step 4: Simplify right side
    2,180.32x = 3,898,479.09
  5. Step 5: Solve for x
    x = 3,898,479.09/2,180.32
  6. Step 6: Final answer
    x = 1,788.03

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1.5x scale

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.