Home / 3,847.20-5,309.06-2,275.80

Finding the Fourth Proportional to 3,847.20, 5,309.06 and 2,275.80

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Solution

The fourth proportional to 3,847.20, 5,309.06 and 2,275.80 is: 3,140.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.20 : 5,309.06 = 2,275.80 : x
  2. Step 2: Convert to fraction form
    3,847.20/5,309.06 = 2,275.80/x
  3. Step 3: Cross multiply
    3,847.20x = 5,309.06 × 2,275.80
  4. Step 4: Simplify right side
    3,847.20x = 12,082,347.37
  5. Step 5: Solve for x
    x = 12,082,347.37/3,847.20
  6. Step 6: Final answer
    x = 3,140.56

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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.