Home / 5,145.21-7,101.09-3,822.75

Finding the Fourth Proportional to 5,145.21, 7,101.09 and 3,822.75

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Solution

The fourth proportional to 5,145.21, 7,101.09 and 3,822.75 is: 5,275.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.21 : 7,101.09 = 3,822.75 : x
  2. Step 2: Convert to fraction form
    5,145.21/7,101.09 = 3,822.75/x
  3. Step 3: Cross multiply
    5,145.21x = 7,101.09 × 3,822.75
  4. Step 4: Simplify right side
    5,145.21x = 27,145,691.80
  5. Step 5: Solve for x
    x = 27,145,691.80/5,145.21
  6. Step 6: Final answer
    x = 5,275.92

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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.