Home / 1,814.78-2,504.04-1,115.76

Finding the Fourth Proportional to 1,814.78, 2,504.04 and 1,115.76

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Solution

The fourth proportional to 1,814.78, 2,504.04 and 1,115.76 is: 1,539.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.78 : 2,504.04 = 1,115.76 : x
  2. Step 2: Convert to fraction form
    1,814.78/2,504.04 = 1,115.76/x
  3. Step 3: Cross multiply
    1,814.78x = 2,504.04 × 1,115.76
  4. Step 4: Simplify right side
    1,814.78x = 2,793,907.67
  5. Step 5: Solve for x
    x = 2,793,907.67/1,814.78
  6. Step 6: Final answer
    x = 1,539.53

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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.