Home / 2,181.04-3,009.78-1,186.31

Finding the Fourth Proportional to 2,181.04, 3,009.78 and 1,186.31

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Solution

The fourth proportional to 2,181.04, 3,009.78 and 1,186.31 is: 1,637.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.04 : 3,009.78 = 1,186.31 : x
  2. Step 2: Convert to fraction form
    2,181.04/3,009.78 = 1,186.31/x
  3. Step 3: Cross multiply
    2,181.04x = 3,009.78 × 1,186.31
  4. Step 4: Simplify right side
    2,181.04x = 3,570,517.06
  5. Step 5: Solve for x
    x = 3,570,517.06/2,181.04
  6. Step 6: Final answer
    x = 1,637.07

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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.