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Finding the Fourth Proportional to 8,166.40, 11,269.64 and 4,440.40

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Solution

The fourth proportional to 8,166.40, 11,269.64 and 4,440.40 is: 6,127.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,166.40 : 11,269.64 = 4,440.40 : x
  2. Step 2: Convert to fraction form
    8,166.40/11,269.64 = 4,440.40/x
  3. Step 3: Cross multiply
    8,166.40x = 11,269.64 × 4,440.40
  4. Step 4: Simplify right side
    8,166.40x = 50,041,709.46
  5. Step 5: Solve for x
    x = 50,041,709.46/8,166.40
  6. Step 6: Final answer
    x = 6,127.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.