Home / 1,090.15-1,634.38-541.91

Finding the Fourth Proportional to 1,090.15, 1,634.38 and 541.91

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Solution

The fourth proportional to 1,090.15, 1,634.38 and 541.91 is: 812.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.15 : 1,634.38 = 541.91 : x
  2. Step 2: Convert to fraction form
    1,090.15/1,634.38 = 541.91/x
  3. Step 3: Cross multiply
    1,090.15x = 1,634.38 × 541.91
  4. Step 4: Simplify right side
    1,090.15x = 885,679.37
  5. Step 5: Solve for x
    x = 885,679.37/1,090.15
  6. Step 6: Final answer
    x = 812.44

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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.