Home / 2,181.13-3,009.98-1,186.42

Finding the Fourth Proportional to 2,181.13, 3,009.98 and 1,186.42

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Solution

The fourth proportional to 2,181.13, 3,009.98 and 1,186.42 is: 1,637.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.13 : 3,009.98 = 1,186.42 : x
  2. Step 2: Convert to fraction form
    2,181.13/3,009.98 = 1,186.42/x
  3. Step 3: Cross multiply
    2,181.13x = 3,009.98 × 1,186.42
  4. Step 4: Simplify right side
    2,181.13x = 3,571,079.49
  5. Step 5: Solve for x
    x = 3,571,079.49/2,181.13
  6. Step 6: Final answer
    x = 1,637.26

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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.