Home / 5,621.88-8,435.85-2,114.28

Finding the Fourth Proportional to 5,621.88, 8,435.85 and 2,114.28

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Solution

The fourth proportional to 5,621.88, 8,435.85 and 2,114.28 is: 3,172.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.88 : 8,435.85 = 2,114.28 : x
  2. Step 2: Convert to fraction form
    5,621.88/8,435.85 = 2,114.28/x
  3. Step 3: Cross multiply
    5,621.88x = 8,435.85 × 2,114.28
  4. Step 4: Simplify right side
    5,621.88x = 17,835,748.94
  5. Step 5: Solve for x
    x = 17,835,748.94/5,621.88
  6. Step 6: Final answer
    x = 3,172.56

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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.