Home / 1,865.58-2,798.82-1,318.83

Finding the Fourth Proportional to 1,865.58, 2,798.82 and 1,318.83

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Solution

The fourth proportional to 1,865.58, 2,798.82 and 1,318.83 is: 1,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.58 : 2,798.82 = 1,318.83 : x
  2. Step 2: Convert to fraction form
    1,865.58/2,798.82 = 1,318.83/x
  3. Step 3: Cross multiply
    1,865.58x = 2,798.82 × 1,318.83
  4. Step 4: Simplify right side
    1,865.58x = 3,691,167.78
  5. Step 5: Solve for x
    x = 3,691,167.78/1,865.58
  6. Step 6: Final answer
    x = 1,978.56

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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.