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Finding the Fourth Proportional to 8,957.76, 13,438.92 and 3,114.48

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Solution

The fourth proportional to 8,957.76, 13,438.92 and 3,114.48 is: 4,672.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.76 : 13,438.92 = 3,114.48 : x
  2. Step 2: Convert to fraction form
    8,957.76/13,438.92 = 3,114.48/x
  3. Step 3: Cross multiply
    8,957.76x = 13,438.92 × 3,114.48
  4. Step 4: Simplify right side
    8,957.76x = 41,855,247.56
  5. Step 5: Solve for x
    x = 41,855,247.56/8,957.76
  6. Step 6: Final answer
    x = 4,672.51

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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.