Home / 5,921.85-8,172.32-3,564.75

Finding the Fourth Proportional to 5,921.85, 8,172.32 and 3,564.75

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Solution

The fourth proportional to 5,921.85, 8,172.32 and 3,564.75 is: 4,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.85 : 8,172.32 = 3,564.75 : x
  2. Step 2: Convert to fraction form
    5,921.85/8,172.32 = 3,564.75/x
  3. Step 3: Cross multiply
    5,921.85x = 8,172.32 × 3,564.75
  4. Step 4: Simplify right side
    5,921.85x = 29,132,259.90
  5. Step 5: Solve for x
    x = 29,132,259.90/5,921.85
  6. Step 6: Final answer
    x = 4,919.45

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1.5x scale

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.