Home / 2,172.17-3,258.24-528.72

Finding the Fourth Proportional to 2,172.17, 3,258.24 and 528.72

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Solution

The fourth proportional to 2,172.17, 3,258.24 and 528.72 is: 793.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.17 : 3,258.24 = 528.72 : x
  2. Step 2: Convert to fraction form
    2,172.17/3,258.24 = 528.72/x
  3. Step 3: Cross multiply
    2,172.17x = 3,258.24 × 528.72
  4. Step 4: Simplify right side
    2,172.17x = 1,722,696.65
  5. Step 5: Solve for x
    x = 1,722,696.65/2,172.17
  6. Step 6: Final answer
    x = 793.08

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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.