Home / 2,265.05-3,125.75-1,380.85

Finding the Fourth Proportional to 2,265.05, 3,125.75 and 1,380.85

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Solution

The fourth proportional to 2,265.05, 3,125.75 and 1,380.85 is: 1,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.05 : 3,125.75 = 1,380.85 : x
  2. Step 2: Convert to fraction form
    2,265.05/3,125.75 = 1,380.85/x
  3. Step 3: Cross multiply
    2,265.05x = 3,125.75 × 1,380.85
  4. Step 4: Simplify right side
    2,265.05x = 4,316,187.53
  5. Step 5: Solve for x
    x = 4,316,187.53/2,265.05
  6. Step 6: Final answer
    x = 1,905.56

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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.