Home / 2,172.35-3,258.53-528.89

Finding the Fourth Proportional to 2,172.35, 3,258.53 and 528.89

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Solution

The fourth proportional to 2,172.35, 3,258.53 and 528.89 is: 793.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.35 : 3,258.53 = 528.89 : x
  2. Step 2: Convert to fraction form
    2,172.35/3,258.53 = 528.89/x
  3. Step 3: Cross multiply
    2,172.35x = 3,258.53 × 528.89
  4. Step 4: Simplify right side
    2,172.35x = 1,723,410.76
  5. Step 5: Solve for x
    x = 1,723,410.76/2,172.35
  6. Step 6: Final answer
    x = 793.34

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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.