Home / 3,186.31-4,396.40-1,788.97

Finding the Fourth Proportional to 3,186.31, 4,396.40 and 1,788.97

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Solution

The fourth proportional to 3,186.31, 4,396.40 and 1,788.97 is: 2,468.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.31 : 4,396.40 = 1,788.97 : x
  2. Step 2: Convert to fraction form
    3,186.31/4,396.40 = 1,788.97/x
  3. Step 3: Cross multiply
    3,186.31x = 4,396.40 × 1,788.97
  4. Step 4: Simplify right side
    3,186.31x = 7,865,018.76
  5. Step 5: Solve for x
    x = 7,865,018.76/3,186.31
  6. Step 6: Final answer
    x = 2,468.38

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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.