Home / 7,057.26-9,739-3,870.57

Finding the Fourth Proportional to 7,057.26, 9,739 and 3,870.57

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Solution

The fourth proportional to 7,057.26, 9,739 and 3,870.57 is: 5,341.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,057.26 : 9,739 = 3,870.57 : x
  2. Step 2: Convert to fraction form
    7,057.26/9,739 = 3,870.57/x
  3. Step 3: Cross multiply
    7,057.26x = 9,739 × 3,870.57
  4. Step 4: Simplify right side
    7,057.26x = 37,695,481.23
  5. Step 5: Solve for x
    x = 37,695,481.23/7,057.26
  6. Step 6: Final answer
    x = 5,341.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.