Home / 2,816.40-4,224.60-1,172.10

Finding the Fourth Proportional to 2,816.40, 4,224.60 and 1,172.10

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Solution

The fourth proportional to 2,816.40, 4,224.60 and 1,172.10 is: 1,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.40 : 4,224.60 = 1,172.10 : x
  2. Step 2: Convert to fraction form
    2,816.40/4,224.60 = 1,172.10/x
  3. Step 3: Cross multiply
    2,816.40x = 4,224.60 × 1,172.10
  4. Step 4: Simplify right side
    2,816.40x = 4,951,653.66
  5. Step 5: Solve for x
    x = 4,951,653.66/2,816.40
  6. Step 6: Final answer
    x = 1,758.15

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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.