Home / 3,376.42-5,065.17-1,428.64

Finding the Fourth Proportional to 3,376.42, 5,065.17 and 1,428.64

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Solution

The fourth proportional to 3,376.42, 5,065.17 and 1,428.64 is: 2,143.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,376.42 : 5,065.17 = 1,428.64 : x
  2. Step 2: Convert to fraction form
    3,376.42/5,065.17 = 1,428.64/x
  3. Step 3: Cross multiply
    3,376.42x = 5,065.17 × 1,428.64
  4. Step 4: Simplify right side
    3,376.42x = 7,236,322.49
  5. Step 5: Solve for x
    x = 7,236,322.49/3,376.42
  6. Step 6: Final answer
    x = 2,143.19

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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.