Home / 2,181.06-3,009.85-1,186.32

Finding the Fourth Proportional to 2,181.06, 3,009.85 and 1,186.32

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Solution

The fourth proportional to 2,181.06, 3,009.85 and 1,186.32 is: 1,637.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.06 : 3,009.85 = 1,186.32 : x
  2. Step 2: Convert to fraction form
    2,181.06/3,009.85 = 1,186.32/x
  3. Step 3: Cross multiply
    2,181.06x = 3,009.85 × 1,186.32
  4. Step 4: Simplify right side
    2,181.06x = 3,570,645.25
  5. Step 5: Solve for x
    x = 3,570,645.25/2,181.06
  6. Step 6: Final answer
    x = 1,637.11

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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.