Home / 2,171.92-3,258.70-1,306.84

Finding the Fourth Proportional to 2,171.92, 3,258.70 and 1,306.84

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Solution

The fourth proportional to 2,171.92, 3,258.70 and 1,306.84 is: 1,960.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.92 : 3,258.70 = 1,306.84 : x
  2. Step 2: Convert to fraction form
    2,171.92/3,258.70 = 1,306.84/x
  3. Step 3: Cross multiply
    2,171.92x = 3,258.70 × 1,306.84
  4. Step 4: Simplify right side
    2,171.92x = 4,258,599.51
  5. Step 5: Solve for x
    x = 4,258,599.51/2,171.92
  6. Step 6: Final answer
    x = 1,960.75

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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.