Home / 5,428.22-8,142.34-1,964.66

Finding the Fourth Proportional to 5,428.22, 8,142.34 and 1,964.66

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Solution

The fourth proportional to 5,428.22, 8,142.34 and 1,964.66 is: 2,946.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.22 : 8,142.34 = 1,964.66 : x
  2. Step 2: Convert to fraction form
    5,428.22/8,142.34 = 1,964.66/x
  3. Step 3: Cross multiply
    5,428.22x = 8,142.34 × 1,964.66
  4. Step 4: Simplify right side
    5,428.22x = 15,996,929.70
  5. Step 5: Solve for x
    x = 15,996,929.70/5,428.22
  6. Step 6: Final answer
    x = 2,946.99

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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.