Home / 5,138.41-7,707.84-1,628.34

Finding the Fourth Proportional to 5,138.41, 7,707.84 and 1,628.34

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Solution

The fourth proportional to 5,138.41, 7,707.84 and 1,628.34 is: 2,442.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.41 : 7,707.84 = 1,628.34 : x
  2. Step 2: Convert to fraction form
    5,138.41/7,707.84 = 1,628.34/x
  3. Step 3: Cross multiply
    5,138.41x = 7,707.84 × 1,628.34
  4. Step 4: Simplify right side
    5,138.41x = 12,551,006.98
  5. Step 5: Solve for x
    x = 12,551,006.98/5,138.41
  6. Step 6: Final answer
    x = 2,442.58

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1.5x scale

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.