Home / 2,855.36-4,279.26-1,812.08

Finding the Fourth Proportional to 2,855.36, 4,279.26 and 1,812.08

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Solution

The fourth proportional to 2,855.36, 4,279.26 and 1,812.08 is: 2,715.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.36 : 4,279.26 = 1,812.08 : x
  2. Step 2: Convert to fraction form
    2,855.36/4,279.26 = 1,812.08/x
  3. Step 3: Cross multiply
    2,855.36x = 4,279.26 × 1,812.08
  4. Step 4: Simplify right side
    2,855.36x = 7,754,361.46
  5. Step 5: Solve for x
    x = 7,754,361.46/2,855.36
  6. Step 6: Final answer
    x = 2,715.72

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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.