Home / 1,814.46-2,721.36-515.64

Finding the Fourth Proportional to 1,814.46, 2,721.36 and 515.64

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Solution

The fourth proportional to 1,814.46, 2,721.36 and 515.64 is: 773.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.46 : 2,721.36 = 515.64 : x
  2. Step 2: Convert to fraction form
    1,814.46/2,721.36 = 515.64/x
  3. Step 3: Cross multiply
    1,814.46x = 2,721.36 × 515.64
  4. Step 4: Simplify right side
    1,814.46x = 1,403,242.07
  5. Step 5: Solve for x
    x = 1,403,242.07/1,814.46
  6. Step 6: Final answer
    x = 773.37

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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.