Home / 2,814.78-4,222.16-2,643.51

Finding the Fourth Proportional to 2,814.78, 4,222.16 and 2,643.51

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Solution

The fourth proportional to 2,814.78, 4,222.16 and 2,643.51 is: 3,965.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.78 : 4,222.16 = 2,643.51 : x
  2. Step 2: Convert to fraction form
    2,814.78/4,222.16 = 2,643.51/x
  3. Step 3: Cross multiply
    2,814.78x = 4,222.16 × 2,643.51
  4. Step 4: Simplify right side
    2,814.78x = 11,161,320.63
  5. Step 5: Solve for x
    x = 11,161,320.63/2,814.78
  6. Step 6: Final answer
    x = 3,965.26

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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.