Home / 5,162.91-7,124.96-2,805.21

Finding the Fourth Proportional to 5,162.91, 7,124.96 and 2,805.21

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Solution

The fourth proportional to 5,162.91, 7,124.96 and 2,805.21 is: 3,871.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,162.91 : 7,124.96 = 2,805.21 : x
  2. Step 2: Convert to fraction form
    5,162.91/7,124.96 = 2,805.21/x
  3. Step 3: Cross multiply
    5,162.91x = 7,124.96 × 2,805.21
  4. Step 4: Simplify right side
    5,162.91x = 19,986,995.02
  5. Step 5: Solve for x
    x = 19,986,995.02/5,162.91
  6. Step 6: Final answer
    x = 3,871.27

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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.