Home / 2,181.68-3,009.30-1,508.32

Finding the Fourth Proportional to 2,181.68, 3,009.30 and 1,508.32

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Solution

The fourth proportional to 2,181.68, 3,009.30 and 1,508.32 is: 2,080.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.68 : 3,009.30 = 1,508.32 : x
  2. Step 2: Convert to fraction form
    2,181.68/3,009.30 = 1,508.32/x
  3. Step 3: Cross multiply
    2,181.68x = 3,009.30 × 1,508.32
  4. Step 4: Simplify right side
    2,181.68x = 4,538,993.97
  5. Step 5: Solve for x
    x = 4,538,993.97/2,181.68
  6. Step 6: Final answer
    x = 2,080.50

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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.