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Finding the Fourth Proportional to 2,994.36, 4,491.84 and 914.40

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Solution

The fourth proportional to 2,994.36, 4,491.84 and 914.40 is: 1,371.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,994.36 : 4,491.84 = 914.40 : x
  2. Step 2: Convert to fraction form
    2,994.36/4,491.84 = 914.40/x
  3. Step 3: Cross multiply
    2,994.36x = 4,491.84 × 914.40
  4. Step 4: Simplify right side
    2,994.36x = 4,107,338.50
  5. Step 5: Solve for x
    x = 4,107,338.50/2,994.36
  6. Step 6: Final answer
    x = 1,371.69

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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.