Home / 2,170.93-3,258.22-939.28

Finding the Fourth Proportional to 2,170.93, 3,258.22 and 939.28

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Solution

The fourth proportional to 2,170.93, 3,258.22 and 939.28 is: 1,409.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.93 : 3,258.22 = 939.28 : x
  2. Step 2: Convert to fraction form
    2,170.93/3,258.22 = 939.28/x
  3. Step 3: Cross multiply
    2,170.93x = 3,258.22 × 939.28
  4. Step 4: Simplify right side
    2,170.93x = 3,060,364.59
  5. Step 5: Solve for x
    x = 3,060,364.59/2,170.93
  6. Step 6: Final answer
    x = 1,409.71

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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.