Home / 3,783.55-5,221.45-2,290.62

Finding the Fourth Proportional to 3,783.55, 5,221.45 and 2,290.62

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Solution

The fourth proportional to 3,783.55, 5,221.45 and 2,290.62 is: 3,161.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.55 : 5,221.45 = 2,290.62 : x
  2. Step 2: Convert to fraction form
    3,783.55/5,221.45 = 2,290.62/x
  3. Step 3: Cross multiply
    3,783.55x = 5,221.45 × 2,290.62
  4. Step 4: Simplify right side
    3,783.55x = 11,960,357.80
  5. Step 5: Solve for x
    x = 11,960,357.80/3,783.55
  6. Step 6: Final answer
    x = 3,161.15

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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.