Home / 2,379.79-3,284.23-1,317.55

Finding the Fourth Proportional to 2,379.79, 3,284.23 and 1,317.55

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Solution

The fourth proportional to 2,379.79, 3,284.23 and 1,317.55 is: 1,818.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.79 : 3,284.23 = 1,317.55 : x
  2. Step 2: Convert to fraction form
    2,379.79/3,284.23 = 1,317.55/x
  3. Step 3: Cross multiply
    2,379.79x = 3,284.23 × 1,317.55
  4. Step 4: Simplify right side
    2,379.79x = 4,327,137.24
  5. Step 5: Solve for x
    x = 4,327,137.24/2,379.79
  6. Step 6: Final answer
    x = 1,818.29

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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.