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Finding the Fourth Proportional to 8,393.28, 11,581.56 and 4,855.20

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Solution

The fourth proportional to 8,393.28, 11,581.56 and 4,855.20 is: 6,699.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.28 : 11,581.56 = 4,855.20 : x
  2. Step 2: Convert to fraction form
    8,393.28/11,581.56 = 4,855.20/x
  3. Step 3: Cross multiply
    8,393.28x = 11,581.56 × 4,855.20
  4. Step 4: Simplify right side
    8,393.28x = 56,230,790.11
  5. Step 5: Solve for x
    x = 56,230,790.11/8,393.28
  6. Step 6: Final answer
    x = 6,699.50

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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.