Home / 2,818.83-4,228.26-1,278.75

Finding the Fourth Proportional to 2,818.83, 4,228.26 and 1,278.75

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Solution

The fourth proportional to 2,818.83, 4,228.26 and 1,278.75 is: 1,918.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.83 : 4,228.26 = 1,278.75 : x
  2. Step 2: Convert to fraction form
    2,818.83/4,228.26 = 1,278.75/x
  3. Step 3: Cross multiply
    2,818.83x = 4,228.26 × 1,278.75
  4. Step 4: Simplify right side
    2,818.83x = 5,406,887.48
  5. Step 5: Solve for x
    x = 5,406,887.48/2,818.83
  6. Step 6: Final answer
    x = 1,918.13

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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.