Home / 1,095.12-1,511.04-629.28

Finding the Fourth Proportional to 1,095.12, 1,511.04 and 629.28

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Solution

The fourth proportional to 1,095.12, 1,511.04 and 629.28 is: 868.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.12 : 1,511.04 = 629.28 : x
  2. Step 2: Convert to fraction form
    1,095.12/1,511.04 = 629.28/x
  3. Step 3: Cross multiply
    1,095.12x = 1,511.04 × 629.28
  4. Step 4: Simplify right side
    1,095.12x = 950,867.25
  5. Step 5: Solve for x
    x = 950,867.25/1,095.12
  6. Step 6: Final answer
    x = 868.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.