Home / 2,172.08-3,258.27-873.55

Finding the Fourth Proportional to 2,172.08, 3,258.27 and 873.55

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Solution

The fourth proportional to 2,172.08, 3,258.27 and 873.55 is: 1,310.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.08 : 3,258.27 = 873.55 : x
  2. Step 2: Convert to fraction form
    2,172.08/3,258.27 = 873.55/x
  3. Step 3: Cross multiply
    2,172.08x = 3,258.27 × 873.55
  4. Step 4: Simplify right side
    2,172.08x = 2,846,261.76
  5. Step 5: Solve for x
    x = 2,846,261.76/2,172.08
  6. Step 6: Final answer
    x = 1,310.39

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1.5x scale

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.