Home / 1,405.85-2,111.28-1,334.09

Finding the Fourth Proportional to 1,405.85, 2,111.28 and 1,334.09

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Solution

The fourth proportional to 1,405.85, 2,111.28 and 1,334.09 is: 2,003.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.85 : 2,111.28 = 1,334.09 : x
  2. Step 2: Convert to fraction form
    1,405.85/2,111.28 = 1,334.09/x
  3. Step 3: Cross multiply
    1,405.85x = 2,111.28 × 1,334.09
  4. Step 4: Simplify right side
    1,405.85x = 2,816,626.98
  5. Step 5: Solve for x
    x = 2,816,626.98/1,405.85
  6. Step 6: Final answer
    x = 2,003.51

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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.