Home / 7,781.88-11,671.38-2,586.36

Finding the Fourth Proportional to 7,781.88, 11,671.38 and 2,586.36

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Solution

The fourth proportional to 7,781.88, 11,671.38 and 2,586.36 is: 3,879.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.88 : 11,671.38 = 2,586.36 : x
  2. Step 2: Convert to fraction form
    7,781.88/11,671.38 = 2,586.36/x
  3. Step 3: Cross multiply
    7,781.88x = 11,671.38 × 2,586.36
  4. Step 4: Simplify right side
    7,781.88x = 30,186,390.38
  5. Step 5: Solve for x
    x = 30,186,390.38/7,781.88
  6. Step 6: Final answer
    x = 3,879.06

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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.