Home / 2,143.13-3,214.96-756.18

Finding the Fourth Proportional to 2,143.13, 3,214.96 and 756.18

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Solution

The fourth proportional to 2,143.13, 3,214.96 and 756.18 is: 1,134.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.13 : 3,214.96 = 756.18 : x
  2. Step 2: Convert to fraction form
    2,143.13/3,214.96 = 756.18/x
  3. Step 3: Cross multiply
    2,143.13x = 3,214.96 × 756.18
  4. Step 4: Simplify right side
    2,143.13x = 2,431,098.62
  5. Step 5: Solve for x
    x = 2,431,098.62/2,143.13
  6. Step 6: Final answer
    x = 1,134.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.