Home / 5,163.51-7,125.64-2,805.65

Finding the Fourth Proportional to 5,163.51, 7,125.64 and 2,805.65

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Solution

The fourth proportional to 5,163.51, 7,125.64 and 2,805.65 is: 3,871.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.51 : 7,125.64 = 2,805.65 : x
  2. Step 2: Convert to fraction form
    5,163.51/7,125.64 = 2,805.65/x
  3. Step 3: Cross multiply
    5,163.51x = 7,125.64 × 2,805.65
  4. Step 4: Simplify right side
    5,163.51x = 19,992,051.87
  5. Step 5: Solve for x
    x = 19,992,051.87/5,163.51
  6. Step 6: Final answer
    x = 3,871.79

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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.