Home / 2,818.29-3,892.96-2,163.24

Finding the Fourth Proportional to 2,818.29, 3,892.96 and 2,163.24

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Solution

The fourth proportional to 2,818.29, 3,892.96 and 2,163.24 is: 2,988.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.29 : 3,892.96 = 2,163.24 : x
  2. Step 2: Convert to fraction form
    2,818.29/3,892.96 = 2,163.24/x
  3. Step 3: Cross multiply
    2,818.29x = 3,892.96 × 2,163.24
  4. Step 4: Simplify right side
    2,818.29x = 8,421,409.49
  5. Step 5: Solve for x
    x = 8,421,409.49/2,818.29
  6. Step 6: Final answer
    x = 2,988.12

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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.