Home / 7,125.80-10,688.70-3,837.20

Finding the Fourth Proportional to 7,125.80, 10,688.70 and 3,837.20

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Solution

The fourth proportional to 7,125.80, 10,688.70 and 3,837.20 is: 5,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.80 : 10,688.70 = 3,837.20 : x
  2. Step 2: Convert to fraction form
    7,125.80/10,688.70 = 3,837.20/x
  3. Step 3: Cross multiply
    7,125.80x = 10,688.70 × 3,837.20
  4. Step 4: Simplify right side
    7,125.80x = 41,014,679.64
  5. Step 5: Solve for x
    x = 41,014,679.64/7,125.80
  6. Step 6: Final answer
    x = 5,755.80

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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.