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Finding the Fourth Proportional to 8,900.84, 13,359.18 and 4,744.28

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Solution

The fourth proportional to 8,900.84, 13,359.18 and 4,744.28 is: 7,120.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900.84 : 13,359.18 = 4,744.28 : x
  2. Step 2: Convert to fraction form
    8,900.84/13,359.18 = 4,744.28/x
  3. Step 3: Cross multiply
    8,900.84x = 13,359.18 × 4,744.28
  4. Step 4: Simplify right side
    8,900.84x = 63,379,639.30
  5. Step 5: Solve for x
    x = 63,379,639.30/8,900.84
  6. Step 6: Final answer
    x = 7,120.64

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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.