Home / 2,258.74-3,378.75-2,120.50

Finding the Fourth Proportional to 2,258.74, 3,378.75 and 2,120.50

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Solution

The fourth proportional to 2,258.74, 3,378.75 and 2,120.50 is: 3,171.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,258.74 : 3,378.75 = 2,120.50 : x
  2. Step 2: Convert to fraction form
    2,258.74/3,378.75 = 2,120.50/x
  3. Step 3: Cross multiply
    2,258.74x = 3,378.75 × 2,120.50
  4. Step 4: Simplify right side
    2,258.74x = 7,164,639.38
  5. Step 5: Solve for x
    x = 7,164,639.38/2,258.74
  6. Step 6: Final answer
    x = 3,171.96

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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.