Home / 5,138.48-7,708.87-1,628.47

Finding the Fourth Proportional to 5,138.48, 7,708.87 and 1,628.47

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Solution

The fourth proportional to 5,138.48, 7,708.87 and 1,628.47 is: 2,443.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.48 : 7,708.87 = 1,628.47 : x
  2. Step 2: Convert to fraction form
    5,138.48/7,708.87 = 1,628.47/x
  3. Step 3: Cross multiply
    5,138.48x = 7,708.87 × 1,628.47
  4. Step 4: Simplify right side
    5,138.48x = 12,553,622.68
  5. Step 5: Solve for x
    x = 12,553,622.68/5,138.48
  6. Step 6: Final answer
    x = 2,443.06

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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.