Home / 2,181.96-3,253.37-2,143.08

Finding the Fourth Proportional to 2,181.96, 3,253.37 and 2,143.08

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Solution

The fourth proportional to 2,181.96, 3,253.37 and 2,143.08 is: 3,195.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.96 : 3,253.37 = 2,143.08 : x
  2. Step 2: Convert to fraction form
    2,181.96/3,253.37 = 2,143.08/x
  3. Step 3: Cross multiply
    2,181.96x = 3,253.37 × 2,143.08
  4. Step 4: Simplify right side
    2,181.96x = 6,972,232.18
  5. Step 5: Solve for x
    x = 6,972,232.18/2,181.96
  6. Step 6: Final answer
    x = 3,195.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.