Home / 7,138.23-10,705.28-2,754.68

Finding the Fourth Proportional to 7,138.23, 10,705.28 and 2,754.68

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Solution

The fourth proportional to 7,138.23, 10,705.28 and 2,754.68 is: 4,131.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.23 : 10,705.28 = 2,754.68 : x
  2. Step 2: Convert to fraction form
    7,138.23/10,705.28 = 2,754.68/x
  3. Step 3: Cross multiply
    7,138.23x = 10,705.28 × 2,754.68
  4. Step 4: Simplify right side
    7,138.23x = 29,489,553.41
  5. Step 5: Solve for x
    x = 29,489,553.41/7,138.23
  6. Step 6: Final answer
    x = 4,131.21

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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.