Home / 2,181.97-3,011.14-1,187.26

Finding the Fourth Proportional to 2,181.97, 3,011.14 and 1,187.26

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Solution

The fourth proportional to 2,181.97, 3,011.14 and 1,187.26 is: 1,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.97 : 3,011.14 = 1,187.26 : x
  2. Step 2: Convert to fraction form
    2,181.97/3,011.14 = 1,187.26/x
  3. Step 3: Cross multiply
    2,181.97x = 3,011.14 × 1,187.26
  4. Step 4: Simplify right side
    2,181.97x = 3,575,000.03
  5. Step 5: Solve for x
    x = 3,575,000.03/2,181.97
  6. Step 6: Final answer
    x = 1,638.43

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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.