Home / 2,180.86-3,250.75-2,005.90

Finding the Fourth Proportional to 2,180.86, 3,250.75 and 2,005.90

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Solution

The fourth proportional to 2,180.86, 3,250.75 and 2,005.90 is: 2,989.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.86 : 3,250.75 = 2,005.90 : x
  2. Step 2: Convert to fraction form
    2,180.86/3,250.75 = 2,005.90/x
  3. Step 3: Cross multiply
    2,180.86x = 3,250.75 × 2,005.90
  4. Step 4: Simplify right side
    2,180.86x = 6,520,679.43
  5. Step 5: Solve for x
    x = 6,520,679.43/2,180.86
  6. Step 6: Final answer
    x = 2,989.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.