Home / 5,317.41-7,976.31-1,421.82

Finding the Fourth Proportional to 5,317.41, 7,976.31 and 1,421.82

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Solution

The fourth proportional to 5,317.41, 7,976.31 and 1,421.82 is: 2,132.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.41 : 7,976.31 = 1,421.82 : x
  2. Step 2: Convert to fraction form
    5,317.41/7,976.31 = 1,421.82/x
  3. Step 3: Cross multiply
    5,317.41x = 7,976.31 × 1,421.82
  4. Step 4: Simplify right side
    5,317.41x = 11,340,877.08
  5. Step 5: Solve for x
    x = 11,340,877.08/5,317.41
  6. Step 6: Final answer
    x = 2,132.78

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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.