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Finding the Fourth Proportional to 4,991.84, 7,488.74 and 1,481.92

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Solution

The fourth proportional to 4,991.84, 7,488.74 and 1,481.92 is: 2,223.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.84 : 7,488.74 = 1,481.92 : x
  2. Step 2: Convert to fraction form
    4,991.84/7,488.74 = 1,481.92/x
  3. Step 3: Cross multiply
    4,991.84x = 7,488.74 × 1,481.92
  4. Step 4: Simplify right side
    4,991.84x = 11,097,713.58
  5. Step 5: Solve for x
    x = 11,097,713.58/4,991.84
  6. Step 6: Final answer
    x = 2,223.17

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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.