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Finding the Fourth Proportional to 8,912.70, 13,368.78 and 2,338.92

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Solution

The fourth proportional to 8,912.70, 13,368.78 and 2,338.92 is: 3,508.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.70 : 13,368.78 = 2,338.92 : x
  2. Step 2: Convert to fraction form
    8,912.70/13,368.78 = 2,338.92/x
  3. Step 3: Cross multiply
    8,912.70x = 13,368.78 × 2,338.92
  4. Step 4: Simplify right side
    8,912.70x = 31,268,506.92
  5. Step 5: Solve for x
    x = 31,268,506.92/8,912.70
  6. Step 6: Final answer
    x = 3,508.31

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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.