Home / 2,818.13-4,227.66-869.94

Finding the Fourth Proportional to 2,818.13, 4,227.66 and 869.94

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Solution

The fourth proportional to 2,818.13, 4,227.66 and 869.94 is: 1,305.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.13 : 4,227.66 = 869.94 : x
  2. Step 2: Convert to fraction form
    2,818.13/4,227.66 = 869.94/x
  3. Step 3: Cross multiply
    2,818.13x = 4,227.66 × 869.94
  4. Step 4: Simplify right side
    2,818.13x = 3,677,810.54
  5. Step 5: Solve for x
    x = 3,677,810.54/2,818.13
  6. Step 6: Final answer
    x = 1,305.06

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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.