Home / 1,474.75-2,035.11-811.56

Finding the Fourth Proportional to 1,474.75, 2,035.11 and 811.56

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Solution

The fourth proportional to 1,474.75, 2,035.11 and 811.56 is: 1,119.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.75 : 2,035.11 = 811.56 : x
  2. Step 2: Convert to fraction form
    1,474.75/2,035.11 = 811.56/x
  3. Step 3: Cross multiply
    1,474.75x = 2,035.11 × 811.56
  4. Step 4: Simplify right side
    1,474.75x = 1,651,613.87
  5. Step 5: Solve for x
    x = 1,651,613.87/1,474.75
  6. Step 6: Final answer
    x = 1,119.93

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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.