Home / 2,991.35-4,482.04-2,112.40

Finding the Fourth Proportional to 2,991.35, 4,482.04 and 2,112.40

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Solution

The fourth proportional to 2,991.35, 4,482.04 and 2,112.40 is: 3,165.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.35 : 4,482.04 = 2,112.40 : x
  2. Step 2: Convert to fraction form
    2,991.35/4,482.04 = 2,112.40/x
  3. Step 3: Cross multiply
    2,991.35x = 4,482.04 × 2,112.40
  4. Step 4: Simplify right side
    2,991.35x = 9,467,861.30
  5. Step 5: Solve for x
    x = 9,467,861.30/2,991.35
  6. Step 6: Final answer
    x = 3,165.08

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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.