Home / 5,163.28-7,125.36-2,805.52

Finding the Fourth Proportional to 5,163.28, 7,125.36 and 2,805.52

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Solution

The fourth proportional to 5,163.28, 7,125.36 and 2,805.52 is: 3,871.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.28 : 7,125.36 = 2,805.52 : x
  2. Step 2: Convert to fraction form
    5,163.28/7,125.36 = 2,805.52/x
  3. Step 3: Cross multiply
    5,163.28x = 7,125.36 × 2,805.52
  4. Step 4: Simplify right side
    5,163.28x = 19,990,339.99
  5. Step 5: Solve for x
    x = 19,990,339.99/5,163.28
  6. Step 6: Final answer
    x = 3,871.64

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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.