Home / 3,782.55-5,220.07-2,289.62

Finding the Fourth Proportional to 3,782.55, 5,220.07 and 2,289.62

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Solution

The fourth proportional to 3,782.55, 5,220.07 and 2,289.62 is: 3,159.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,782.55 : 5,220.07 = 2,289.62 : x
  2. Step 2: Convert to fraction form
    3,782.55/5,220.07 = 2,289.62/x
  3. Step 3: Cross multiply
    3,782.55x = 5,220.07 × 2,289.62
  4. Step 4: Simplify right side
    3,782.55x = 11,951,984.00
  5. Step 5: Solve for x
    x = 11,951,984.00/3,782.55
  6. Step 6: Final answer
    x = 3,159.77

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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.