Home / 3,428.16-5,138.97-1,347.47

Finding the Fourth Proportional to 3,428.16, 5,138.97 and 1,347.47

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Solution

The fourth proportional to 3,428.16, 5,138.97 and 1,347.47 is: 2,019.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.16 : 5,138.97 = 1,347.47 : x
  2. Step 2: Convert to fraction form
    3,428.16/5,138.97 = 1,347.47/x
  3. Step 3: Cross multiply
    3,428.16x = 5,138.97 × 1,347.47
  4. Step 4: Simplify right side
    3,428.16x = 6,924,607.91
  5. Step 5: Solve for x
    x = 6,924,607.91/3,428.16
  6. Step 6: Final answer
    x = 2,019.92

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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.