Home / 2,181.74-3,010.84-1,187.04

Finding the Fourth Proportional to 2,181.74, 3,010.84 and 1,187.04

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Solution

The fourth proportional to 2,181.74, 3,010.84 and 1,187.04 is: 1,638.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.74 : 3,010.84 = 1,187.04 : x
  2. Step 2: Convert to fraction form
    2,181.74/3,010.84 = 1,187.04/x
  3. Step 3: Cross multiply
    2,181.74x = 3,010.84 × 1,187.04
  4. Step 4: Simplify right side
    2,181.74x = 3,573,987.51
  5. Step 5: Solve for x
    x = 3,573,987.51/2,181.74
  6. Step 6: Final answer
    x = 1,638.14

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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.