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Finding the Fourth Proportional to 8,898.56, 13,356.48 and 6,449.12

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Solution

The fourth proportional to 8,898.56, 13,356.48 and 6,449.12 is: 9,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.56 : 13,356.48 = 6,449.12 : x
  2. Step 2: Convert to fraction form
    8,898.56/13,356.48 = 6,449.12/x
  3. Step 3: Cross multiply
    8,898.56x = 13,356.48 × 6,449.12
  4. Step 4: Simplify right side
    8,898.56x = 86,137,542.30
  5. Step 5: Solve for x
    x = 86,137,542.30/8,898.56
  6. Step 6: Final answer
    x = 9,679.94

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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.