Home / 1,343.18-2,015.08-727.45

Finding the Fourth Proportional to 1,343.18, 2,015.08 and 727.45

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Solution

The fourth proportional to 1,343.18, 2,015.08 and 727.45 is: 1,091.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.18 : 2,015.08 = 727.45 : x
  2. Step 2: Convert to fraction form
    1,343.18/2,015.08 = 727.45/x
  3. Step 3: Cross multiply
    1,343.18x = 2,015.08 × 727.45
  4. Step 4: Simplify right side
    1,343.18x = 1,465,863.09
  5. Step 5: Solve for x
    x = 1,465,863.09/1,343.18
  6. Step 6: Final answer
    x = 1,091.34

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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.