Home / 1,301.40-1,796.58-1,090.80

Finding the Fourth Proportional to 1,301.40, 1,796.58 and 1,090.80

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Solution

The fourth proportional to 1,301.40, 1,796.58 and 1,090.80 is: 1,505.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.40 : 1,796.58 = 1,090.80 : x
  2. Step 2: Convert to fraction form
    1,301.40/1,796.58 = 1,090.80/x
  3. Step 3: Cross multiply
    1,301.40x = 1,796.58 × 1,090.80
  4. Step 4: Simplify right side
    1,301.40x = 1,959,709.46
  5. Step 5: Solve for x
    x = 1,959,709.46/1,301.40
  6. Step 6: Final answer
    x = 1,505.85

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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.