Home / 1,443.04-2,164.64-518.69

Finding the Fourth Proportional to 1,443.04, 2,164.64 and 518.69

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Solution

The fourth proportional to 1,443.04, 2,164.64 and 518.69 is: 778.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443.04 : 2,164.64 = 518.69 : x
  2. Step 2: Convert to fraction form
    1,443.04/2,164.64 = 518.69/x
  3. Step 3: Cross multiply
    1,443.04x = 2,164.64 × 518.69
  4. Step 4: Simplify right side
    1,443.04x = 1,122,777.12
  5. Step 5: Solve for x
    x = 1,122,777.12/1,443.04
  6. Step 6: Final answer
    x = 778.06

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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.