Home / 2,181.31-3,010.14-1,186.57

Finding the Fourth Proportional to 2,181.31, 3,010.14 and 1,186.57

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Solution

The fourth proportional to 2,181.31, 3,010.14 and 1,186.57 is: 1,637.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.31 : 3,010.14 = 1,186.57 : x
  2. Step 2: Convert to fraction form
    2,181.31/3,010.14 = 1,186.57/x
  3. Step 3: Cross multiply
    2,181.31x = 3,010.14 × 1,186.57
  4. Step 4: Simplify right side
    2,181.31x = 3,571,741.82
  5. Step 5: Solve for x
    x = 3,571,741.82/2,181.31
  6. Step 6: Final answer
    x = 1,637.43

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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.