Home / 3,759.45-5,640.15-1,127.01

Finding the Fourth Proportional to 3,759.45, 5,640.15 and 1,127.01

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Solution

The fourth proportional to 3,759.45, 5,640.15 and 1,127.01 is: 1,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.45 : 5,640.15 = 1,127.01 : x
  2. Step 2: Convert to fraction form
    3,759.45/5,640.15 = 1,127.01/x
  3. Step 3: Cross multiply
    3,759.45x = 5,640.15 × 1,127.01
  4. Step 4: Simplify right side
    3,759.45x = 6,356,505.45
  5. Step 5: Solve for x
    x = 6,356,505.45/3,759.45
  6. Step 6: Final answer
    x = 1,690.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.