Home / 1,276.04-1,911.36-727.94

Finding the Fourth Proportional to 1,276.04, 1,911.36 and 727.94

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Solution

The fourth proportional to 1,276.04, 1,911.36 and 727.94 is: 1,090.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.04 : 1,911.36 = 727.94 : x
  2. Step 2: Convert to fraction form
    1,276.04/1,911.36 = 727.94/x
  3. Step 3: Cross multiply
    1,276.04x = 1,911.36 × 727.94
  4. Step 4: Simplify right side
    1,276.04x = 1,391,355.40
  5. Step 5: Solve for x
    x = 1,391,355.40/1,276.04
  6. Step 6: Final answer
    x = 1,090.37

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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.