Home / 1,474.82-2,035.36-811.70

Finding the Fourth Proportional to 1,474.82, 2,035.36 and 811.70

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Solution

The fourth proportional to 1,474.82, 2,035.36 and 811.70 is: 1,120.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.82 : 2,035.36 = 811.70 : x
  2. Step 2: Convert to fraction form
    1,474.82/2,035.36 = 811.70/x
  3. Step 3: Cross multiply
    1,474.82x = 2,035.36 × 811.70
  4. Step 4: Simplify right side
    1,474.82x = 1,652,101.71
  5. Step 5: Solve for x
    x = 1,652,101.71/1,474.82
  6. Step 6: Final answer
    x = 1,120.21

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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.