Home / 1,474.90-2,035.39-811.77

Finding the Fourth Proportional to 1,474.90, 2,035.39 and 811.77

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Solution

The fourth proportional to 1,474.90, 2,035.39 and 811.77 is: 1,120.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.90 : 2,035.39 = 811.77 : x
  2. Step 2: Convert to fraction form
    1,474.90/2,035.39 = 811.77/x
  3. Step 3: Cross multiply
    1,474.90x = 2,035.39 × 811.77
  4. Step 4: Simplify right side
    1,474.90x = 1,652,260.39
  5. Step 5: Solve for x
    x = 1,652,260.39/1,474.90
  6. Step 6: Final answer
    x = 1,120.25

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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.