Home / 5,316.87-7,976.43-1,619.39

Finding the Fourth Proportional to 5,316.87, 7,976.43 and 1,619.39

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Solution

The fourth proportional to 5,316.87, 7,976.43 and 1,619.39 is: 2,429.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.87 : 7,976.43 = 1,619.39 : x
  2. Step 2: Convert to fraction form
    5,316.87/7,976.43 = 1,619.39/x
  3. Step 3: Cross multiply
    5,316.87x = 7,976.43 × 1,619.39
  4. Step 4: Simplify right side
    5,316.87x = 12,916,911.10
  5. Step 5: Solve for x
    x = 12,916,911.10/5,316.87
  6. Step 6: Final answer
    x = 2,429.42

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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.