Home / 2,380.45-3,284.86-1,385.57

Finding the Fourth Proportional to 2,380.45, 3,284.86 and 1,385.57

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Solution

The fourth proportional to 2,380.45, 3,284.86 and 1,385.57 is: 1,911.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.45 : 3,284.86 = 1,385.57 : x
  2. Step 2: Convert to fraction form
    2,380.45/3,284.86 = 1,385.57/x
  3. Step 3: Cross multiply
    2,380.45x = 3,284.86 × 1,385.57
  4. Step 4: Simplify right side
    2,380.45x = 4,551,380.12
  5. Step 5: Solve for x
    x = 4,551,380.12/2,380.45
  6. Step 6: Final answer
    x = 1,911.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.