Home / 2,380.43-3,285.14-1,385.84

Finding the Fourth Proportional to 2,380.43, 3,285.14 and 1,385.84

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Solution

The fourth proportional to 2,380.43, 3,285.14 and 1,385.84 is: 1,912.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.43 : 3,285.14 = 1,385.84 : x
  2. Step 2: Convert to fraction form
    2,380.43/3,285.14 = 1,385.84/x
  3. Step 3: Cross multiply
    2,380.43x = 3,285.14 × 1,385.84
  4. Step 4: Simplify right side
    2,380.43x = 4,552,655.06
  5. Step 5: Solve for x
    x = 4,552,655.06/2,380.43
  6. Step 6: Final answer
    x = 1,912.54

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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.