Home / 2,181.40-3,008.68-1,395.03

Finding the Fourth Proportional to 2,181.40, 3,008.68 and 1,395.03

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Solution

The fourth proportional to 2,181.40, 3,008.68 and 1,395.03 is: 1,924.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.40 : 3,008.68 = 1,395.03 : x
  2. Step 2: Convert to fraction form
    2,181.40/3,008.68 = 1,395.03/x
  3. Step 3: Cross multiply
    2,181.40x = 3,008.68 × 1,395.03
  4. Step 4: Simplify right side
    2,181.40x = 4,197,198.86
  5. Step 5: Solve for x
    x = 4,197,198.86/2,181.40
  6. Step 6: Final answer
    x = 1,924.08

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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.