Home / 3,428.18-5,138.63-1,783.08

Finding the Fourth Proportional to 3,428.18, 5,138.63 and 1,783.08

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Solution

The fourth proportional to 3,428.18, 5,138.63 and 1,783.08 is: 2,672.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.18 : 5,138.63 = 1,783.08 : x
  2. Step 2: Convert to fraction form
    3,428.18/5,138.63 = 1,783.08/x
  3. Step 3: Cross multiply
    3,428.18x = 5,138.63 × 1,783.08
  4. Step 4: Simplify right side
    3,428.18x = 9,162,588.38
  5. Step 5: Solve for x
    x = 9,162,588.38/3,428.18
  6. Step 6: Final answer
    x = 2,672.73

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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.