Home / 5,163.36-7,125.47-2,805.50

Finding the Fourth Proportional to 5,163.36, 7,125.47 and 2,805.50

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Solution

The fourth proportional to 5,163.36, 7,125.47 and 2,805.50 is: 3,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.36 : 7,125.47 = 2,805.50 : x
  2. Step 2: Convert to fraction form
    5,163.36/7,125.47 = 2,805.50/x
  3. Step 3: Cross multiply
    5,163.36x = 7,125.47 × 2,805.50
  4. Step 4: Simplify right side
    5,163.36x = 19,990,456.43
  5. Step 5: Solve for x
    x = 19,990,456.43/5,163.36
  6. Step 6: Final answer
    x = 3,871.60

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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.