Home / 5,428.90-8,143.20-1,731.36

Finding the Fourth Proportional to 5,428.90, 8,143.20 and 1,731.36

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Solution

The fourth proportional to 5,428.90, 8,143.20 and 1,731.36 is: 2,596.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.90 : 8,143.20 = 1,731.36 : x
  2. Step 2: Convert to fraction form
    5,428.90/8,143.20 = 1,731.36/x
  3. Step 3: Cross multiply
    5,428.90x = 8,143.20 × 1,731.36
  4. Step 4: Simplify right side
    5,428.90x = 14,098,810.75
  5. Step 5: Solve for x
    x = 14,098,810.75/5,428.90
  6. Step 6: Final answer
    x = 2,596.99

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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.