Home / 2,141.12-3,191.68-2,118.08

Finding the Fourth Proportional to 2,141.12, 3,191.68 and 2,118.08

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Solution

The fourth proportional to 2,141.12, 3,191.68 and 2,118.08 is: 3,157.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,141.12 : 3,191.68 = 2,118.08 : x
  2. Step 2: Convert to fraction form
    2,141.12/3,191.68 = 2,118.08/x
  3. Step 3: Cross multiply
    2,141.12x = 3,191.68 × 2,118.08
  4. Step 4: Simplify right side
    2,141.12x = 6,760,233.57
  5. Step 5: Solve for x
    x = 6,760,233.57/2,141.12
  6. Step 6: Final answer
    x = 3,157.34

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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.