Home / 3,765.50-5,191.56-3,090.80

Finding the Fourth Proportional to 3,765.50, 5,191.56 and 3,090.80

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Solution

The fourth proportional to 3,765.50, 5,191.56 and 3,090.80 is: 4,261.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.50 : 5,191.56 = 3,090.80 : x
  2. Step 2: Convert to fraction form
    3,765.50/5,191.56 = 3,090.80/x
  3. Step 3: Cross multiply
    3,765.50x = 5,191.56 × 3,090.80
  4. Step 4: Simplify right side
    3,765.50x = 16,046,073.65
  5. Step 5: Solve for x
    x = 16,046,073.65/3,765.50
  6. Step 6: Final answer
    x = 4,261.34

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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.