Home / 5,317.80-7,976.40-1,619.96

Finding the Fourth Proportional to 5,317.80, 7,976.40 and 1,619.96

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Solution

The fourth proportional to 5,317.80, 7,976.40 and 1,619.96 is: 2,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.80 : 7,976.40 = 1,619.96 : x
  2. Step 2: Convert to fraction form
    5,317.80/7,976.40 = 1,619.96/x
  3. Step 3: Cross multiply
    5,317.80x = 7,976.40 × 1,619.96
  4. Step 4: Simplify right side
    5,317.80x = 12,921,448.94
  5. Step 5: Solve for x
    x = 12,921,448.94/5,317.80
  6. Step 6: Final answer
    x = 2,429.85

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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.