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Finding the Fourth Proportional to 7,505.78, 11,258.67 and 1,959.11

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Solution

The fourth proportional to 7,505.78, 11,258.67 and 1,959.11 is: 2,938.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,505.78 : 11,258.67 = 1,959.11 : x
  2. Step 2: Convert to fraction form
    7,505.78/11,258.67 = 1,959.11/x
  3. Step 3: Cross multiply
    7,505.78x = 11,258.67 × 1,959.11
  4. Step 4: Simplify right side
    7,505.78x = 22,056,972.98
  5. Step 5: Solve for x
    x = 22,056,972.98/7,505.78
  6. Step 6: Final answer
    x = 2,938.67

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Similar ratio
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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.