Home / 3,769.40-5,191.02-2,719.80

Finding the Fourth Proportional to 3,769.40, 5,191.02 and 2,719.80

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Solution

The fourth proportional to 3,769.40, 5,191.02 and 2,719.80 is: 3,745.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,769.40 : 5,191.02 = 2,719.80 : x
  2. Step 2: Convert to fraction form
    3,769.40/5,191.02 = 2,719.80/x
  3. Step 3: Cross multiply
    3,769.40x = 5,191.02 × 2,719.80
  4. Step 4: Simplify right side
    3,769.40x = 14,118,536.20
  5. Step 5: Solve for x
    x = 14,118,536.20/3,769.40
  6. Step 6: Final answer
    x = 3,745.57

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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.