Home / 5,108.25-7,661.91-2,645.15

Finding the Fourth Proportional to 5,108.25, 7,661.91 and 2,645.15

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Solution

The fourth proportional to 5,108.25, 7,661.91 and 2,645.15 is: 3,967.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.25 : 7,661.91 = 2,645.15 : x
  2. Step 2: Convert to fraction form
    5,108.25/7,661.91 = 2,645.15/x
  3. Step 3: Cross multiply
    5,108.25x = 7,661.91 × 2,645.15
  4. Step 4: Simplify right side
    5,108.25x = 20,266,862.93
  5. Step 5: Solve for x
    x = 20,266,862.93/5,108.25
  6. Step 6: Final answer
    x = 3,967.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.