Home / 2,181.96-3,011.12-1,187.26

Finding the Fourth Proportional to 2,181.96, 3,011.12 and 1,187.26

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Solution

The fourth proportional to 2,181.96, 3,011.12 and 1,187.26 is: 1,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.96 : 3,011.12 = 1,187.26 : x
  2. Step 2: Convert to fraction form
    2,181.96/3,011.12 = 1,187.26/x
  3. Step 3: Cross multiply
    2,181.96x = 3,011.12 × 1,187.26
  4. Step 4: Simplify right side
    2,181.96x = 3,574,982.33
  5. Step 5: Solve for x
    x = 3,574,982.33/2,181.96
  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.