Home / 5,719.42-7,891.05-3,729.25

Finding the Fourth Proportional to 5,719.42, 7,891.05 and 3,729.25

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Solution

The fourth proportional to 5,719.42, 7,891.05 and 3,729.25 is: 5,145.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.42 : 7,891.05 = 3,729.25 : x
  2. Step 2: Convert to fraction form
    5,719.42/7,891.05 = 3,729.25/x
  3. Step 3: Cross multiply
    5,719.42x = 7,891.05 × 3,729.25
  4. Step 4: Simplify right side
    5,719.42x = 29,427,698.21
  5. Step 5: Solve for x
    x = 29,427,698.21/5,719.42
  6. Step 6: Final answer
    x = 5,145.22

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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.