Home / 3,815.10-5,267.03-2,621.87

Finding the Fourth Proportional to 3,815.10, 5,267.03 and 2,621.87

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Solution

The fourth proportional to 3,815.10, 5,267.03 and 2,621.87 is: 3,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.10 : 5,267.03 = 2,621.87 : x
  2. Step 2: Convert to fraction form
    3,815.10/5,267.03 = 2,621.87/x
  3. Step 3: Cross multiply
    3,815.10x = 5,267.03 × 2,621.87
  4. Step 4: Simplify right side
    3,815.10x = 13,809,448.25
  5. Step 5: Solve for x
    x = 13,809,448.25/3,815.10
  6. Step 6: Final answer
    x = 3,619.68

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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.